Let’s solve each problem one by one. We’ll go row by row, and for each, we’ll either add or subtract as shown.
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Row 1:
① 25 - 11 =
14
(25 minus 10 is 15, minus 1 more is 14)
② 13 - 13 =
0
(Same number subtracted from itself is always 0)
③ 25 + 13 =
38
(25 + 10 = 35, +3 = 38)
④ 37 + 10 =
47
(Just add 10 to 37 → 47)
⑤ 19 - 10 =
9
(Take away 10 from 19 → 9)
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Row 2:
⑥ 15 - 7 =
8
(15 - 5 = 10, then -2 more = 8)
⑦ 19 + 12 =
31
(19 + 10 = 29, +2 = 31)
⑧ 22 - 12 =
10
(22 - 10 = 12, -2 = 10)
⑨ 14 + 7 =
21
(14 + 6 = 20, +1 = 21)
⑩ 18 - 4 =
14
(18 - 4 is straightforward → 14)
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Row 3:
⑪ 21 - 12 =
9
(21 - 10 = 11, -2 = 9)
⑫ 15 + 7 =
22
(15 + 5 = 20, +2 = 22)
⑬ 16 + 16 =
32
(Double 16 → 32)
⑭ 22 - 14 =
8
(22 - 10 = 12, -4 = 8)
⑮ 28 - 20 =
8
(28 - 20 = 8)
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Row 4:
⑯ 33 + 17 =
50
(33 + 10 = 43, +7 = 50)
⑰ 20 + 10 =
30
(Easy! 20 + 10 = 30)
⑱ 17 - 7 =
10
(17 - 7 = 10)
⑲ 14 - 10 =
4
(14 - 10 = 4)
⑳ 19 - 4 =
15
(19 - 4 = 15)
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Row 5:
㉑ 25 - 25 =
0
(Again, same number minus itself = 0)
㉒ 17 + 30 =
47
(17 + 30 = 47)
㉓ 42 - 10 =
32
(42 - 10 = 32)
㉔ 14 - 14 =
0
(Same number again → 0)
㉕ 27 + 21 =
48
(27 + 20 = 47, +1 = 48)
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Final Answer:
14, 0, 38, 47, 9, 8, 31, 10, 21, 14, 9, 22, 32, 8, 8, 50, 30, 10, 4, 15, 0, 47, 32, 0, 48
Parent Tip: Review the logic above to help your child master the concept of addition and subtraction worksheet for 2nd.
