﻿ Subtract with 2-Digits 2 Year 2 Addition and Subtraction Learning Video Clip | Classroom Secrets
MathsYear 2Autumn Block 2 (Addition and Subtraction)14 Subtract With 2-Digits 2 › Subtract with 2-Digits 2 Year 2 Addition and Subtraction Learning Video Clip

# Subtract with 2-Digits 2 Year 2 Addition and Subtraction Learning Video Clip ## Step 14: Subtract with 2-Digits 2 Year 2 Addition and Subtraction Learning Video Clip

Cleo and Blake return to the prehistoric era and have lots of fun observing different dinosaurs and reptiles out in the wild.

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1. Help her work out the answer.
Discuss converting the numbers from words back into digits. Discuss out to set the sum out. Discuss exchanging.
71 – 19 = 52

2. Help Cleo work out the answer.
Discuss converting the numbers from words back into digits. Discuss that the bar model helps us to visualise what the problem is asking us but we still need to use another method to solve. Discuss suitable methods for solving such as partitioning or column method.
54 – 39 = 15

3. Help Blake work out the answer.
Discuss how to use the part-whole model to help subtract the 2-digit numbers. Discuss suitable methods for subtracting with exchanging such as partitioning or column method.
72 – 56 = 16

4. Find all the possible answers.
Discuss Discuss whether the linear format helps to subtract 2-digit numbers or not. Discuss all the possibilities for the number of berries left. Discuss how that can be used to work out how many were taken. Discuss the most effective method for subtracting. This question is open-ended for the children to explore.
Various answers, for example: 82 – 15 = 67; 82 – 25 = 57. Potentially there could have been 57, 58, 59, 60, 61, 62, 63, 64, 65, 66 and 67 berries go missing.

National Curriculum Objectives

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