Rounding to the nearest ten and hundred · sheet 10 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | Round 485 to the nearest ten | 490 | 480 cutting the number off instead of rounding |
| 2 | Round 508 to the nearest ten | 510 | 500 cutting the number off instead of rounding or rounding at the wrong place |
| 3 | Round 307 to the nearest ten | 310 | 300 cutting the number off instead of rounding or rounding at the wrong place |
| 4 | Round 652 to the nearest ten | 650 | 660 rounding at the wrong place |
| 5 | Round 576 to the nearest ten | 580 | 570 cutting the number off instead of rounding |
| 6 | Round 426 to the nearest hundred | 400 | no pattern to catch here |
| 7 | Round 350 to the nearest hundred | 400 | 300 cutting the number off instead of rounding or rounding at the wrong place |
| 8 | Round 823 to the nearest hundred | 800 | 900 rounding at the wrong place |
| 9 | Round 164 to the nearest hundred | 200 | 100 cutting the number off instead of rounding or rounding at the wrong place |
| 10 | Round 608 to the nearest ten | 610 | 600 cutting the number off instead of rounding or rounding at the wrong place |
| 11 | Round 19 to the nearest ten | 20 | 10 cutting the number off instead of rounding or rounding at the wrong place |
| 12 | Round 267 to the nearest hundred | 300 | 200 cutting the number off instead of rounding or rounding at the wrong place |
| 13 | Round 150 to the nearest hundred | 200 | 100 cutting the number off instead of rounding or rounding at the wrong place |
| 14 | Round 192 to the nearest hundred | 200 | 100 cutting the number off instead of rounding or rounding at the wrong place |
| 15 | Round 125 to the nearest ten | 130 | 120 cutting the number off instead of rounding or rounding at the wrong place |
| 16 | Round 365 to the nearest ten | 370 | 360 cutting the number off instead of rounding |
| 17 | Round 899 to the nearest hundred | 900 | 800 cutting the number off instead of rounding |
| 18 | Round 143 to the nearest ten | 140 | no pattern to catch here |
| 19 | Round 550 to the nearest hundred | 600 | 500 cutting the number off instead of rounding |
| 20 | Round 144 to the nearest hundred | 100 | no pattern to catch here |
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.