Rounding to the nearest ten and hundred · sheet 28 of 30
Answer key
The answer, and what a wrong answer means.
| # | Problem | Answer | If they wrote… |
|---|---|---|---|
| 1 | Round 255 to the nearest ten | 260 | 250 cutting the number off instead of rounding |
| 2 | Round 390 to the nearest hundred | 400 | 300 cutting the number off instead of rounding or rounding at the wrong place |
| 3 | Round 392 to the nearest hundred | 400 | 300 cutting the number off instead of rounding or rounding at the wrong place |
| 4 | Round 955 to the nearest ten | 960 | 950 cutting the number off instead of rounding |
| 5 | Round 663 to the nearest hundred | 700 | 600 cutting the number off instead of rounding |
| 6 | Round 289 to the nearest ten | 290 | 280 cutting the number off instead of rounding |
| 7 | Round 770 to the nearest hundred | 800 | 700 cutting the number off instead of rounding |
| 8 | Round 318 to the nearest ten | 320 | 310 cutting the number off instead of rounding or rounding at the wrong place |
| 9 | Round 646 to the nearest ten | 650 | 640 cutting the number off instead of rounding or rounding at the wrong place |
| 10 | Round 250 to the nearest hundred | 300 | 200 cutting the number off instead of rounding or rounding at the wrong place |
| 11 | Round 828 to the nearest hundred | 800 | 900 rounding at the wrong place |
| 12 | Round 25 to the nearest ten | 30 | 20 cutting the number off instead of rounding or rounding at the wrong place |
| 13 | Round 437 to the nearest ten | 440 | 430 cutting the number off instead of rounding or rounding at the wrong place |
| 14 | Round 650 to the nearest hundred | 700 | 600 cutting the number off instead of rounding |
| 15 | Round 592 to the nearest hundred | 600 | 500 cutting the number off instead of rounding |
| 16 | Round 403 to the nearest ten | 400 | no pattern to catch here |
| 17 | Round 478 to the nearest ten | 480 | 470 cutting the number off instead of rounding |
| 18 | Round 450 to the nearest hundred | 500 | 400 cutting the number off instead of rounding or rounding at the wrong place |
| 19 | Round 343 to the nearest ten | 340 | no pattern to catch here |
| 20 | Round 681 to the nearest hundred | 700 | 600 cutting the number off instead of rounding |
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.