
Test solutions with the detailed point scale. Add up your points and spot what to review.
1 Base-ten blocks / 4 pts
- 4 flats, 2 rods, 7 cubes: 427 (1 pt).
- Four hundred twenty-seven (1 pt).
- \(427 = 400 + 20 + 7\) (1 pt).
- The 2 is in the tens place: its value is 20 (1 pt).
2 Digits and words / 3 pts
- 615 (1 pt).
- Two hundred ninety (1 pt).
- 805, with 0 tens (1 pt).
3 Expanded form / 3 pts
- 371 (1 pt).
- 905 (1 pt).
- \(408 = 400 + 8\) (1 pt).
4 Skip counting / 4 pts
- 650, 655, 660 (1 pt).
- 800, 810, 820; after 790 the hundreds digit changes (1 pt).
- 325, 425 (1 pt).
- 8 hundreds is \(8 \times 10 = 80\) tens: 80 tens (1 pt).
5 Compose 526 / 3 pts
- \(526 - 400 - 6 = 120\), which is 12 tens (1 pt).
- \(526 - 300 - 6 = 220\), which is 22 tens (1 pt).
- \(526 - 6 = 520\), which is 52 tens (1 pt).
6 Marbles / 3 pts
- \(700 + 90 + 4 = 794\). 794 marbles (1 pt).
- One more jar adds 100: \(794 + 100 = 894\). 894 marbles (1 pt).
- \(900 - 894 = 6\). 6 more marbles (1 pt).
Test yourself: quick challenge for Grade 2
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