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Add and Subtract

Add and Subtract. I can use materials or drawings to show how numbers fit together to 20. I can make organised lists showing the numbers that fit together to 20. I can add near doubles by thinking about doubles. I can use basic facts to work out new facts (e.g. 8+7 = 15 so 18+7 = 25).

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Add and Subtract

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  1. Add and Subtract I can use materials or drawings to show how numbers fit together to 20. I can make organised lists showing the numbers that fit together to 20. I can add near doubles by thinking about doubles.

  2. I can use basic facts to work out new facts (e.g. 8+7 = 15 so 18+7 = 25). I can use a number line to show how I count on or back to add or subtract. I can think about addition to help me subtract (e.g. for 24 – 18, think 18 add what makes 24). I can use a jump strategy to add past a ten (e.g. 26 + 8 = 26 + 4( = 30) + 4).

  3. I can count on or back in tens to help add or subtract (e.g.28 + 37 = 28 + 30 + 7 = 58 + 7). I can add or subtract 8 and 9 by adding or subtracting ten then adjusting. I can solve a two step problem.

  4. I can use materials or drawings to show the parts and the whole in a number story. I can skip count in 2s, 5s or 10s to help me add or subtract. I can use a part-part-whole diagram to decide if I should add or subtract. I can use a part-part-whole diagram to help me write a number sentence.

  5. I can use the add, subtract, equals and constant keys. I can name some of the keys on a calculator. I can enter a given number into a calculator.

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