Mental strategies to multiply by 0.1 and 0.01, and estimate sums and differences of decimal numbers up to hundredths
10 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest — every one with a full worked solution. Work through them free, no account needed.
Sample: the first question, solved
What is 4×0.1?
📘 Worked solution
✓0.4.
And one from the hard end
Estimate the difference of 8.67−2.14.
Solution shown after you try it in practice mode.
Work through all 10, easiest to hardest
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