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MathsYear 2Autumn Block 2 (Addition and Subtraction)07 10 More and 10 Less › 10 More and 10 Less Year 2 Addition and Subtraction Learning Video Clip

# 10 More and 10 Less Year 2 Addition and Subtraction Learning Video Clip ## Step 7: 10 More and 10 Less Year 2 Addition and Subtraction Learning Video Clip

Cleo the time traveller is off on another adventure! This time she is going to travel back to the 1850s to revisit another Victorian mill. She meets lots of people and helps them to find 10 more and 10 less.

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1. How many times have the children clocked in altogether?
Discuss how many times the little girl has clocked in. Discuss finding that number on a hundred square. Discuss how many times the little boy has clocked in. Discuss how we can use a hundred square to add ten to a number. Discuss whether the tens digit changes and whether the ones digit changes.
37 + 10 = 47

2. Help me to work out how many I have left?
Discuss how many sacks of cotton there were to start with. Discuss how many sacks of cotton could have been taken away. Discuss how we can use a hundred square to count back ten. Discuss whether the tens digit changes and whether the ones digit changes. Discuss the different possible answers. This question is open-ended for children to explore.
Various answers, for example: 94 – 20 = 74

3. How many have I got altogether?
Discuss how many boxes the nurse started with. Discuss how many boxes have just been delivered. Discuss how when we add ten, the tens digit will increase but the ones will stay the same.
18 + 10 = 28