Equivalent Expressions [Addition]
BackIn the produced worksheet, students will be working with problems related to Expressions equivalent for Addition
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About this worksheet
Suits Years 3 to 5Addition pairs to judge: some equal by swapping (5+9 and 9+5), some equal by rebalancing (12+6 and 10+8), some simply not equal.
The rebalancing pairs teach a mental-maths gem: move an amount from one addend to the other and the total stands still.
How to make your worksheet
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Every press of Generate lays out a fresh sheet, ready to print on A4.
Common questions
What is rebalancing good for?
Making sums friendly: 38 + 27 rebalances to 40 + 25, instantly 65. The pairs on this sheet are the training ground for that move.
Compute or reason, which do we want?
First compute both sides, then, as pairs repeat, invite reasoning: they moved 2 across, so equal. Reasoning that agrees with computation is understanding arriving.