Adding and Subtracting 1...Adding and Subtracting 1 Complete these +1 and –1 number sentences. You...
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Adding and Subtracting 1 Complete these +1 and –1 number sentences. You could use a number line or hundred square to help you. Extra challenge You start with a number and subtract 1. The answer ends in 9. Where might you have started?
Transcript of Adding and Subtracting 1...Adding and Subtracting 1 Complete these +1 and –1 number sentences. You...
Adding and Subtracting 1
Complete these +1 and –1 number sentences. You could use a number line or hundred square to help you.
Extra challenge
You start with a number and subtract 1. The answer ends in 9. Where might you have started?