Rounding to the nearest ten and hundred · sheet 22 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | Round 315 to the nearest ten | 320 | 310 cutting the number off instead of rounding or rounding at the wrong place |
| 2 | Round 375 to the nearest hundred | 400 | 300 cutting the number off instead of rounding or rounding at the wrong place |
| 3 | Round 883 to the nearest ten | 880 | 890 rounding at the wrong place |
| 4 | Round 650 to the nearest hundred | 700 | 600 cutting the number off instead of rounding |
| 5 | Round 15 to the nearest ten | 20 | 10 cutting the number off instead of rounding or rounding at the wrong place |
| 6 | Round 172 to the nearest hundred | 200 | 100 cutting the number off instead of rounding or rounding at the wrong place |
| 7 | Round 21 to the nearest ten | 20 | no pattern to catch here |
| 8 | Round 150 to the nearest hundred | 200 | 100 cutting the number off instead of rounding or rounding at the wrong place |
| 9 | Round 450 to the nearest hundred | 500 | 400 cutting the number off instead of rounding or rounding at the wrong place |
| 10 | Round 134 to the nearest hundred | 100 | no pattern to catch here |
| 11 | Round 549 to the nearest hundred | 500 | 600 rounding at the wrong place |
| 12 | Round 255 to the nearest ten | 260 | 250 cutting the number off instead of rounding |
| 13 | Round 582 to the nearest hundred | 600 | 500 cutting the number off instead of rounding |
| 14 | Round 254 to the nearest ten | 250 | 260 rounding at the wrong place |
| 15 | Round 275 to the nearest hundred | 300 | 200 cutting the number off instead of rounding or rounding at the wrong place |
| 16 | Round 638 to the nearest hundred | 600 | 700 rounding at the wrong place |
| 17 | Round 776 to the nearest ten | 780 | 770 cutting the number off instead of rounding |
| 18 | Round 963 to the nearest ten | 960 | 970 rounding at the wrong place |
| 19 | Round 419 to the nearest ten | 420 | 410 cutting the number off instead of rounding or rounding at the wrong place |
| 20 | Round 163 to the nearest ten | 160 | 170 rounding at the wrong place |
Reading the wrong answers
One wrong answer is a slip. The same pattern on three or more problems is a rule your child is following, and it has a name and a fix. Problems marked "no pattern to catch" are the plain ones; a child who gets only those right is telling you something too.