Estimating
To the nearest ten
Name: Date:
Round each number to the nearest ten, then multiply.
183 × 32
268 × 95
371 × 81
495 × 95
544 × 46
611 × 74
738 × 18
892 × 25
Free · Grade 4 · 3-digit sums, 2-digit products
Estimating sums and products worksheets
Working on estimating sums and products? Print this sheet as it is, or change the level and questions first. You can also answer it on screen — it is the same sheet either way.
- Answer key included
- Reopen this exact sheet
- Letter & A4 ready
Ready to printEstimating sums and products
The answer key prints on a separate page.
What's on this sheet
Round first, then compute — and the instruction says so, because the other order gives different answers. 44 + 44 is 40 + 40 = 80 rounding first, and 88 → 90 computing first, and both are defensible English. A printed sheet cannot hold two right answers, so it names the one it wants. It is also the one the standard means: an estimate is what you work out INSTEAD of the calculation, not a tidying-up afterwards.
Why this sheet works
The numbers are big enough that estimating is worth doing, which sounds obvious and is the part these sheets are usually wrong about. 8 + 7 rounds to 10 + 10 = 20, and a child who can add 8 and 7 in their head has no reason to estimate anything — the technique gets taught where it is useless, and the honest answer to “why would I?” is “you wouldn’t”. So sums and differences use three-digit numbers, where the exact answer needs carrying, and products use two digits by two, where the exact answer needs a written method.