Let’s solve each subtraction problem step by step. We’ll go row by row, left to right.
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First Row:
1. 300 - 280 =
20
(Think: 300 minus 200 is 100, then minus 80 more → 20)
2. 400 - 306 =
94
(400 - 300 = 100; 100 - 6 = 94)
3. 900 - 634 =
266
(900 - 600 = 300; 300 - 34 = 266)
4. 700 - 498 =
202
(700 - 500 = 200; but we subtracted 2 too many, so add back 2 → 202)
5. 500 - 377 =
123
(500 - 300 = 200; 200 - 77 = 123)
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Second Row:
6. 800 - 196 =
604
(800 - 200 = 600; add back 4 → 604)
7. 100 - 37 =
63
(100 - 30 = 70; 70 - 7 = 63)
8. 800 - 550 =
250
(800 - 500 = 300; 300 - 50 = 250)
9. 200 - 137 =
63
(200 - 100 = 100; 100 - 37 = 63)
10. 900 - 180 =
720
(900 - 100 = 800; 800 - 80 = 720)
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Third Row:
11. 200 - 93 =
107
(200 - 100 = 100; add back 7 → 107)
12. 300 - 201 =
99
(300 - 200 = 100; 100 - 1 = 99)
13. 900 - 89 =
811
(900 - 100 = 800; add back 11 → 811)
14. 800 - 432 =
368
(800 - 400 = 400; 400 - 32 = 368)
15. 400 - 377 =
23
(400 - 300 = 100; 100 - 77 = 23)
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Fourth Row:
16. 500 - 380 =
120
(500 - 300 = 200; 200 - 80 = 120)
17. 300 - 231 =
69
(300 - 200 = 100; 100 - 31 = 69)
18. 100 - 87 =
13
(100 - 80 = 20; 20 - 7 = 13)
19. 800 - 743 =
57
(800 - 700 = 100; 100 - 43 = 57)
20. 200 - 83 =
117
(200 - 80 = 120; 120 - 3 = 117)
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Fifth Row (bottom right):
21. 700 - 390 =
310
(700 - 400 = 300; add back 10 → 310)
22. 300 - 177 =
123
(300 - 100 = 200; 200 - 77 = 123)
23. 700 - 530 =
170
(700 - 500 = 200; 200 - 30 = 170)
24. 900 - 444 =
456
(900 - 400 = 500; 500 - 44 = 456)
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✔ All problems solved and double-checked.
Final Answer:
20, 94, 266, 202, 123,
604, 63, 250, 63, 720,
107, 99, 811, 368, 23,
120, 69, 13, 57, 117,
310, 123, 170, 456
Parent Tip: Review the logic above to help your child master the concept of subtraction with regrouping across zeros worksheet.
