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Year 2 Mental Addition and Subtraction Strategies Worksheet — Level 1 — Practice Set 4 — Answers

Answer sheet with worked solutions for the Year 2 addition worksheet.

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Success TutoringWorksheetsAnswer sheetYear 2 · Mathematics · Addition

Year 2 Mental Addition and Subtraction Strategies Worksheet — Level 1 — Practice Set 4 — Answers

Fill in each step of the strategy, then write the answer.

1.9 + 7 = 9 + 1 + (answer space) = (answer space)

Answer: 6, 16

  1. 9 + 1 = 10 (a ten)
  2. 10 + 6 = 16
2.7 + 6 = 7 + 3 + (answer space) = (answer space)

Answer: 3, 13

  1. 7 + 3 = 10 (a ten)
  2. 10 + 3 = 13
3.9 + 10 = (answer space) + (answer space) + 1 = (answer space)

Answer: 9, 9, 19

  1. Double 9 is 18
  2. 18 + 1 = 19
4.9 + 9 = 9 + 1 + (answer space) = (answer space)

Answer: 8, 18

  1. 9 + 1 = 10 (a ten)
  2. 10 + 8 = 18
5.8 + 7 = 8 + 2 + (answer space) = (answer space)

Answer: 5, 15

  1. 8 + 2 = 10 (a ten)
  2. 10 + 5 = 15
6.3 + 4 = (answer space) + (answer space) + 1 = (answer space)

Answer: 3, 3, 7

  1. Double 3 is 6
  2. 6 + 1 = 7
7.9 + 6 = 9 + 1 + (answer space) = (answer space)

Answer: 5, 15

  1. 9 + 1 = 10 (a ten)
  2. 10 + 5 = 15
8.8 + 8 = 8 + 2 + (answer space) = (answer space)

Answer: 6, 16

  1. 8 + 2 = 10 (a ten)
  2. 10 + 6 = 16
9.7 + 8 = (answer space) + (answer space) + 1 = (answer space)

Answer: 7, 7, 15

  1. Double 7 is 14
  2. 14 + 1 = 15
10.6 + 5 = 6 + 4 + (answer space) = (answer space)

Answer: 1, 11

  1. 6 + 4 = 10 (a ten)
  2. 10 + 1 = 11
11.6 + 7 = 6 + 4 + (answer space) = (answer space)

Answer: 3, 13

  1. 6 + 4 = 10 (a ten)
  2. 10 + 3 = 13
12.4 + 3 = (answer space) + (answer space) + 1 = (answer space)

Answer: 3, 3, 7

  1. Double 3 is 6
  2. 6 + 1 = 7
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