Solve problems with or without a calculator Level 4

1/8 of = 40. Use inverses to check results, for example, 703/19 = 37 appears to about right because 36 x 20 = 720 . Carry out simple calculations involving negative numbers in context What would 0.6 mean on a calculator display if the units were £s, metres, hours, cars? What is the important information in this problem? Show me a problem that you would use a calculator to work out the answer ... ................
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