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Some subtraction to keep our skills fresh. These will require regrouping and subtracting across 0

Blue reasoning work

Reasoning work 2


Write three calculations where you would use mental calculations and three where you'd use the column method. Explain the decision you have made for each calculation.

Problem solving


1) A chocolate factory usually produce 1568 caramel bars on a Saturday but on a Sunday production decreases and they make 325 fewer bars. How many bars are produced at the weekend in total?


2) All of the digits below are either a 3 or a 9. Can you work out each digit?


7338= ???? + ????