﻿ Mixed Age Year 3 and 4 Addition and Subtraction Step 10 Resource Pack | Classroom Secrets

# Mixed Age Year 3 and 4 Addition and Subtraction Step 10 Resource Pack

## Step 10: Mixed Age Year 3 and 4 Addition and Subtraction Step 10

Mixed Age Year 3 and 4 Addition and Subtraction Step 10 Resource Pack includes a teaching PowerPoint and differentiated varied fluency and reasoning and problem solving resources for this step which covers Year 3 Check Answers & Year 4 Checking Strategies for Autumn Block 2.

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### What's included in the Pack?

This Mixed Age Year 3 and 4 Addition and Subtraction Step 10 pack includes:

• Mixed Age Year 3 and 4 Addition and Subtraction Step 10 Teaching PowerPoint with examples for both year groups.
• Year 4 Checking Strategies Varied Fluency with answers.
• Year 4 Checking Strategies Reasoning and Problem Solving with answers.

#### National Curriculum Objectives

Mathematics Year 3: (3C3) Estimate the answer to a calculation and use inverse operations to check answers

Mathematics Year 4: (4C3) Estimate and use inverse operations to check answers to a calculation

Differentiation for Year 3 Check Answers:

Varied Fluency
Developing Questions to support checking answers to addition and subtraction calculations using the inverse operation. Includes 2-digit numbers.
Expected Questions to support checking answers to addition and subtraction calculations using the inverse operation. Includes 2-digit and 3-digit numbers.
Greater Depth Questions to support checking answers to addition and subtraction calculations using the inverse operation. Includes 3-digit and 4-digit numbers.

Reasoning and Problem Solving
Questions 1, 4 and 7 (Reasoning)
Developing Identify and explain the odd one out of 4 versions of a calculation. Includes 2-digit numbers.
Expected Identify and explain the odd one out of 4 versions of a calculation. Includes 2-digit and 3-digit numbers.
Greater Depth Identify and explain the odd one out of 4 versions of a calculation. Includes 3-digit and 4-digit numbers.

Questions 2, 5 and 8 (Reasoning)
Developing Explain and correct the mistake made when checking an answer to a calculation. Includes 2-digit numbers.
Expected Explain and correct the mistake made when checking an answer to a calculation. Includes 2-digit and 3-digit numbers.
Greater Depth Explain and correct the mistake made when checking an answer to a calculation. Includes 3-digit and 4-digit numbers.

Questions 3, 6 and 9 (Problem Solving)
Developing Calculate the starting number of a calculation by using the inverse operation. Includes 2-digit numbers.
Expected Calculate the starting number of a calculation by using the inverse operation. Includes 2-digit and 3-digit numbers.
Greater Depth Calculate the starting number of a calculation by using the inverse operation. Includes 3-digit and 4-digit numbers.

Differentiation for Year 4 Checking Strategies:

Varied Fluency
Developing Questions to support using inverse operations to check addition and subtraction of two 3-digit numbers (no exchanges).
Expected Questions to support using inverse operations to check addition and subtraction of up to two 4-digit numbers (with exchanges).
Greater Depth Questions to support using inverse operations to check addition and subtraction of up to 4-digit numbers from 5-digit numbers (with exchanges).

Reasoning and Problem Solving
Questions 1, 4 and 7 (Reasoning)
Developing Check the accuracy of a bar model with related addition and subtraction of 3-digit numbers. Explain any errors found.
Expected Check the accuracy of a bar model with related addition and subtraction of 4-digit numbers. Explain any errors found.
Greater Depth Check the accuracy of a bar model with related addition and subtraction of up to 5-digit numbers. Explain any errors found.

Questions 2, 5 and 8 (Reasoning)
Developing Find 3 related numbers by addition and subtraction from a choice of 4. Includes 3-digit numbers.
Expected Find 3 related numbers by addition and subtraction from a choice of 4. Includes 4-digit numbers.
Greater Depth Find 3 related numbers by addition and subtraction from a choice of 4. Includes up to 5-digit numbers.

Questions 3, 6 and 9 (Problem Solving)
Developing Use 3 digit cards to create an addition or subtraction to achieve a given sum.
Expected Use 4 digit cards to create an addition or subtraction to achieve a given sum.
Greater Depth Use 5 digit cards to create an addition or subtraction to achieve a given sum.