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18 April, 15:13

Describe how you can use compatible numbers to estimate 17x27

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  1. 18 April, 17:50
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    Compatible numbers are pairs of numbers that are easy to add, subtract, multiply, or divide mentally. When using estimation to approximate a calculation, replace actual numbers with compatible numbers. The numbers 500 and 300 are compatible for addition, since the sum of 800 can be easily calculated mentally.
  2. 18 April, 18:38
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    you can use a multiples chart or a calculator

    the answer is: 459
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