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Grade 2 Mental Math to 50 Worksheets

Two-digit addition and subtraction up to 50, meant to be done in the head. The sheets move from adding tens, to adding without regrouping, to subtraction that needs regrouping.

Ontario 2020 math curriculum, Grade 2: B2.3 · 15 questions per sheet · answers included

Easier sheet

Add tens to a two-digit number, such as 23 + 20.

Paperpath
Mental math to 50 · Grade 2 · Easier
Name ____________________
Date ____________________

Mental math to 50 · 15 questions

  1. 1
    20 + 30 =
  2. 2
    15 + 30 =
  3. 3
    21 + 10 =
  4. 4
    14 + 30 =
  5. 5
    23 + 10 =
  6. 6
    32 + 10 =
  7. 7
    24 + 10 =
  8. 8
    22 + 20 =
  9. 9
    35 + 10 =
  10. 10
    18 + 30 =
  11. 11
    25 + 10 =
  12. 12
    37 + 10 =
  13. 13
    16 + 20 =
  14. 14
    30 + 10 =
  15. 15
    36 + 10 =
Answers: scan the code, or visit paperpath.io/worksheets/grade-2/mental-math-to-50
Answers: easier sheet
QuestionAnswer
Q150
Q245
Q331
Q444
Q533
Q642
Q734
Q842
Q945
Q1048
Q1135
Q1247
Q1336
Q1440
Q1546

On level sheet

Add two two-digit numbers without regrouping.

Paperpath
Mental math to 50 · Grade 2 · On level
Name ____________________
Date ____________________

Mental math to 50 · 15 questions

  1. 1
    22 + 17 =
  2. 2
    23 + 24 =
  3. 3
    14 + 11 =
  4. 4
    29 + 20 =
  5. 5
    36 + 11 =
  6. 6
    23 + 12 =
  7. 7
    15 + 33 =
  8. 8
    12 + 16 =
  9. 9
    36 + 13 =
  10. 10
    21 + 16 =
  11. 11
    14 + 24 =
  12. 12
    27 + 20 =
  13. 13
    13 + 26 =
  14. 14
    16 + 11 =
  15. 15
    23 + 15 =
Answers: scan the code, or visit paperpath.io/worksheets/grade-2/mental-math-to-50
Answers: on level sheet
QuestionAnswer
Q139
Q247
Q325
Q449
Q547
Q635
Q748
Q828
Q949
Q1037
Q1138
Q1247
Q1339
Q1427
Q1538

Harder sheet

Subtract two-digit numbers where the ones need regrouping, such as 42 − 17.

Paperpath
Mental math to 50 · Grade 2 · Harder
Name ____________________
Date ____________________

Mental math to 50 · 15 questions

  1. 1
    34 − 25 =
  2. 2
    30 − 29 =
  3. 3
    22 − 13 =
  4. 4
    33 − 25 =
  5. 5
    22 − 15 =
  6. 6
    25 − 18 =
  7. 7
    21 − 14 =
  8. 8
    24 − 19 =
  9. 9
    40 − 28 =
  10. 10
    42 − 27 =
  11. 11
    21 − 17 =
  12. 12
    41 − 16 =
  13. 13
    40 − 34 =
  14. 14
    41 − 34 =
  15. 15
    23 − 17 =
Answers: scan the code, or visit paperpath.io/worksheets/grade-2/mental-math-to-50
Answers: harder sheet
QuestionAnswer
Q19
Q21
Q39
Q48
Q57
Q67
Q77
Q85
Q912
Q1015
Q114
Q1225
Q136
Q147
Q156

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