The ability to round a number to a number of decimal places or to a number of significant figures is essential if answers are to be written to the correct degree of accuracy asked for in a question.

Short division is also known as the bus stop method and is often used to divide large numbers. Start with 8 ÷ 7. 8 ÷ 7 = 1 remainder 1. Write 1 above 8 and carry the 1 to the next digit to give 17 17 ...

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