What exactly is in the download?

A 19-question, 21-mark sheet with branded header, objectives, skills, instructions, name and date fields, page numbering, footer branding, copyright, worksheet ID TN-MATH-GR1-20863, version v1.-5 and a QR code back to this page.

Does it print correctly on US Letter?

Yes. Switch paper size in the download panel — margins and typography are identical, so nothing reflows or clips.

Is the answer key included?

This version prints answers inline, followed by the full solutions and teacher pack pages.

Worksheet · TN-MATH-GR1-20863 · v1.-5

Probability Basics — Teacher Version

A single-focus worksheet on probability basics for Grade 1 Math. Nothing else from statistics is mixed in — every question, from warm-up to reflection, assesses this one objective and builds towards mastery.

CoreOCR30 min21 marksAnswers included

Answers, marking scheme, misconceptions and tips inline.

Grade

Grade 1

Subject

Math

Topic

Statistics

Subtopic

Probability Basics

Curriculum

OCR

Difficulty

Core

Time

30 min

Questions

Total marks

Worksheet ID

TN-MATH-GR1-20863

Version

v1.-5

Format

A4 · US Letter

Preview & download

Print-ready · high-resolution PDF · minimal ink

FreeMathWorksheet

Teacher Version

TN-MATH-GR1-20863 · v1.-5

Probability Basics

Grade 1 · Math · Statistics · OCR

Grade

Grade 1

Subject

Math

Topic

Statistics

Subtopic

Probability Basics

Curriculum

OCR

Difficulty

Core

Time

30 minutes

Total marks

Student name

Teacher name

Date

Learning objectives

Recognise probability basics accurately in math contexts.
Explain the underlying rule of probability basics in the student's own words.
Apply probability basics to multi-step and unfamiliar problems.
Justify a chosen method and identify errors in another student's work.

Skills assessed

Fluency and recall
Method and setting out
Reasoning and justification
Problem solving in context
Self-assessment

Instructions

Write your name, your teacher's name and the date in the header.
Answer every question in the space provided. Continue on the back if needed.
Show all working — method marks are awarded even when the final answer is wrong.
Aim to finish in about 30 minutes.
Complete the reflection box at the end before you hand the sheet in.

Warm-up

Bloom: Remember · 4 marks

Answer quickly. These check you are ready for the topic.

1.State one fact you already know about probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
2.Name one fact you already know about probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
3.State one fact you already know about probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
4.Name one fact you already know about probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.

Recall

Bloom: Remember · 4 marks

Complete from memory. No calculator, no notes.

1.Complete the key term used in probability basics described here: item 1.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
2.Label the key term used in probability basics described here: item 2.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
3.Complete the key term used in probability basics described here: item 3.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
4.Define the key term used in probability basics described here: item 4.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.

FreeMathWorksheet · Grade 1 Math

Probability Basics

Basic Practice

Bloom: Understand · 5 marks

Work through each item. Show the step you used.

1.Match part 1 using the rule for probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
2.Identify part 2 using the rule for probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
3.Work out part 3 using the rule for probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
4.Complete part 4 using the rule for probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.
5.Match part 5 using the rule for probability basics.
[1]
AnswerAccept any correct response that applies the probability basics rule accurately.

Guided Practice

Bloom: Understand · 8 marks

The first step is given. Finish the reasoning.

1.Using the first step given, finish part 1. Step 1 has been started for you.
[2]
AnswerAccept any correct response that applies the probability basics rule accurately.
2.Complete the method for part 2. Step 1 has been started for you.
[2]
AnswerAccept any correct response that applies the probability basics rule accurately.
3.Using the first step given, finish part 3. Step 1 has been started for you.
[2]
AnswerAccept any correct response that applies the probability basics rule accurately.
4.Using the first step given, finish part 4. Step 1 has been started for you.
[2]
AnswerAccept any correct response that applies the probability basics rule accurately.

FreeMathWorksheet · Grade 1 Math

Probability Basics

Reflection

Bloom: Create · 0 marks

Not marked. Answer honestly — this guides your next worksheet.

1.Reflect on how confident you feel with probability basics and what you will practise next.
[—]
AnswerStudent response — not marked.
2.Describe how confident you feel with probability basics and what you will practise next.
[—]
AnswerStudent response — not marked.

FreeMathWorksheet

Answer key · Probability Basics

Warm-up

1.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
2.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
3.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
4.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.

Recall

1.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
2.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
3.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
4.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.

Basic Practice

1.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
2.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
3.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
4.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
5.Accept any correct response that applies the probability basics rule accurately.[1]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.

Guided Practice

1.Accept any correct response that applies the probability basics rule accurately.[2]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
2.Accept any correct response that applies the probability basics rule accurately.[2]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
3.Accept any correct response that applies the probability basics rule accurately.[2]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
4.Accept any correct response that applies the probability basics rule accurately.[2]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.

Reflection

1.Student response — not marked.[0]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.
2.Student response — not marked.[0]
1. Recall the definition that underpins probability basics.
2. Apply it to the values or wording given in the question.
3. State the final answer clearly, with units or terminology where relevant.

FreeMathWorksheet

Teacher pack · Probability Basics

Marking scheme

Band	Marks	Descriptor
Mastered	18–21	Applies probability basics fluently, including in unfamiliar contexts, with clear justification.
Secure	14–17	Reliable in routine questions; reasoning is mostly complete.
Developing	8–13	Secure in scaffolded items, inconsistent once support is removed.
Emerging	0–7	Needs re-teaching of the core rule before progressing.

Teacher notes

Set the warm-up as a five-minute starter; it diagnoses readiness for probability basics before you teach.
Guided practice is the pivot point — circulate here rather than during independent practice.
Mark the reasoning questions with the marking scheme bands, not raw totals, so progress is comparable across variants.
Students who band Emerging should repeat the Easy variant of this same subtopic before moving on within Statistics.

Common student mistakes

Confusing probability basics with a neighbouring idea in statistics.

Teaching tips

Model one worked example of probability basics under a visualiser before handing the sheet out.
Ask students to predict which question they will find hardest, then check the prediction afterwards.
Pair Developing students with Secure students for the guided practice block only.
Use the answer key as a self-marking station rather than collecting the sheets in.

Extension activities

Challenge worksheet on probability basics with justification-only questions.
Design your own probability basics question and write the mark scheme for it.
Link probability basics to the next subtopic in Statistics and explain the connection.
Ten-minute timed practice to convert accuracy into fluency.

Question progression

Recognition → understanding → application → reasoning → mastery. The ladder adapts to Grade 1, and every rung stays on probability basics only.

01Warm-up
Answer quickly. These check you are ready for the topic.
Remember4 questions4 marks
02Recall
Complete from memory. No calculator, no notes.
Remember4 questions4 marks
03Basic Practice
Work through each item. Show the step you used.
Understand5 questions5 marks
04Guided Practice
The first step is given. Finish the reasoning.
Understand4 questions8 marks
05Reflection
Not marked. Answer honestly — this guides your next worksheet.
Create2 questions0 marks

Answer key & solutions

Every worksheet auto-generates a complete key with step-by-step solutions, the marking scheme and teacher notes. It prints as separate pages so the student copy stays clean.

Teacher notes

Set the warm-up as a five-minute starter; it diagnoses readiness for probability basics before you teach.
Guided practice is the pivot point — circulate here rather than during independent practice.
Mark the reasoning questions with the marking scheme bands, not raw totals, so progress is comparable across variants.
Students who band Emerging should repeat the Easy variant of this same subtopic before moving on within Statistics.

Common student mistakes

Confusing probability basics with a neighbouring idea in statistics.

Teaching tips

Model one worked example of probability basics under a visualiser before handing the sheet out.
Ask students to predict which question they will find hardest, then check the prediction afterwards.
Pair Developing students with Secure students for the guided practice block only.
Use the answer key as a self-marking station rather than collecting the sheets in.

Extension activities

Challenge worksheet on probability basics with justification-only questions.
Design your own probability basics question and write the mark scheme for it.
Link probability basics to the next subtopic in Statistics and explain the connection.
Ten-minute timed practice to convert accuracy into fluency.

Switch version

Same subtopic · same objectives · different job

Frequently asked

What exactly is in the download?: A 19-question, 21-mark sheet with branded header, objectives, skills, instructions, name and date fields, page numbering, footer branding, copyright, worksheet ID TN-MATH-GR1-20863, version v1.-5 and a QR code back to this page.
Does it print correctly on US Letter?: Yes. Switch paper size in the download panel — margins and typography are identical, so nothing reflows or clips.
Is the answer key included?: This version prints answers inline, followed by the full solutions and teacher pack pages.

Related resources

Tutoring

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