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9
Estimate the answer to 8.78 x 3.92 - 5.24
31
Round each number to one significant figure...
9 x 4 - 5 = 36 - 5 = 31
Remember
When the questions says estimate you will not get marks if you just work it out so do what it says - round the numbers first!!!
Round each number to one significant figure...
9 x 4 - 5 = 36 - 5 = 31
Remember
When the questions says estimate you will not get marks if you just work it out so do what it says - round the numbers first!!!
