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➕ 2nd grade math · Add & Subtract

Add four numbers

Add all the tens, then all the ones. Then put the two totals together.

Worked example

28 + 35 = ?
Answer: 63
Add the tens: 20 + 30 = 50. Add the ones: 8 + 5 = 13. Then 50 + 13 = 63. Answer: 63.

For grown-ups: Add up to four two-digit numbers. Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.

  • CCSS 2.NBT.B.6
What this practises, for teachers

Practices add up to four two-digit numbers (2.NBT.B.6). A printable sheet with its answer key, worked answers on the page, no accounts.

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For your class

🖨️ Printable sheet and key

On the board with this skill:

More printables, with answer keys, for this grade:

Try three

  1. 32 + 47 = ?
    Show the answer and how
    Answer: 79
    Add the tens: 30 + 40 = 70. Add the ones: 2 + 7 = 9. Then 70 + 9 = 79. Answer: 79.
  2. 49 + 38 + 14 = ?
    Show the answer and how
    Answer: 101
    Add the tens: 40 + 30 + 10 = 80. Add the ones: 9 + 8 + 4 = 21. Then 80 + 21 = 101. Answer: 101.
  3. 11 + 51 + 30 + 23 = ?
    Show the answer and how
    Answer: 115
    Add the tens: 10 + 50 + 30 + 20 = 110. Add the ones: 1 + 1 + 0 + 3 = 5. Then 110 + 5 = 115. Answer: 115.

Before and after

Learn first: Add and subtract to 100 (2nd)

Name: ____________________Date: ____________Score: ____ / 12

Add four numbers (2nd grade)

  1. 47 + 45 = ?
  2. 37 + 31 = ?
  3. 33 + 47 = ?
  4. 40 + 11 = ?
  5. 44 + 49 + 48 = ?
  6. 57 + 51 + 34 = ?
  7. 18 + 48 + 34 = ?
  8. 42 + 31 + 35 + 44 = ?
  9. 28 + 55 + 33 + 17 = ?
  10. 16 + 44 + 50 + 35 = ?
  11. 43 + 16 + 57 + 54 = ?
  12. 23 + 35 + 33 + 39 = ?

Answer key

  1. 92
  2. 68
  3. 80
  4. 51
  5. 141
  6. 142
  7. 100
  8. 152
  9. 133
  10. 145
  11. 170
  12. 130

More 2nd grade skills: all 2nd grade math skills, or every grade at math skills.