LI: I am learning to add and subtract ones and tens by moving left, right, up, and down on charts with numbers up to 1 000.
1. 175 - 40 = 205
2. 211 + 3= 214
3. 356 - 4 = 258
4. 475 + 30 = 495
5. 582 + 20 = 602
6. 633 + 6 = 639
7. 735 - 5 = 730
8. 826 - 30 = 796
9. 925 + 20 = 245
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