In this worksheet, children recap their learning and extend their
understanding to dealing with 4-digit numbers and adding and
subtracting multiples of 1,000.
The focus is on mental rather than written strategies.
It is important to explore the effect of either adding or subtracting
a multiple of 1, 10, 100 or 1,000 by discussing which columns
always, sometimes and never change.
For example, when adding a multiple of 100, the ones and tens never change, the hundreds always change and the thousands sometimes change, depending on the need to make an exchange
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Add and Subtract Mental strategies
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. They use their knowledge of number bonds and place value to add and subtract multiples of powers of 10. If they know that 3 + 4 = 7, then 3 thousand + 4 thousand = 7 thousand and 3,000 + 4,000 = 7,000. Children need to be fluent in their knowledge of number bonds to support the mental strategies. How does knowing that 6 + 3 = 9 help you to work out 60,000 + 30,000? “How can the numbers be partitioned to help add/subtract them?” "Are any of the numbers multiples of powers of 10? " “How does this help you to add/subtract them?”
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Add and Subtract 1s, 10s, 100s, and 1,000s
These are differentiated worksheets to support and challenge adding and subtracting 1s , 10s , 100s and 1,000 from any number.
£5.00
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