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Add and subtract Mental strategies Higher

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Add and subtract numbers mentally with increasingly large numbers.

In this worksheet, children recap and build on their learning from

previous years to mentally calculate sums and differences using

partitioning.

Children explore strategies such as compensation and

adjustment to mentally calculate the answer to questions

such as 73,352 + 999 or 16,352 − 999.

Children need to be fluent in their knowledge of number

bonds to support the mental strategies.

"Are any of the numbers multiples of powers of 10? "

“How does this help you to add/subtract them?”

"What number is 999 close to?

“How does that help you to add/subtract 999 from another number?”


You will get a PDF (34KB) file