Math Drills
2-Digit Addition Review
C-3Fill in the Blank
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What this worksheet covers
- Topic
- 2-Digit Addition
Writing the digits lined up by place and adding from the ones is the core skill of this unit. Work starts with no carrying, then moves to one carry and two, and the same reasoning comes back in column form, in mental calculation, in fill-in-the-blank items and in word problems.
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In 2-Digit + 1-Digit (Column Calculation), the single-digit number gets written under the tens column instead. If 23 + 4 comes out as 63, this is the pattern. With two carries, the small 1 written above the tens is left out of the addition, and the answer falls short by exactly 10.
Carrying a digit whenever the ones-place sum passes 10 is the procedure this unit puts to work in addition between two 2-digit numbers. Writing the digits stacked by place, the new format called column calculation, grows out of Addition with Carrying, and the same layout is applied again right away in 2-Digit Subtraction.
- 1 Carry · 2-Digit + 1-Digit (Fill in the Blank)4 questions
- No Carrying · 2-Digit + 2-Digit (Fill in the Blank)8 questions
- 1 Carry · 2-Digit + 2-Digit (Fill in the Blank)6 questions
- 2 Carries · 2-Digit + 2-Digit (Fill in the Blank)6 questions
Questions & answers
Problems and answers on this worksheet
These are the problems in “2-Digit Addition”, shown with their answers.
(1)□+2=71
Answer: 69
(2)□+99=126
Answer: 27
(3)36+□=41
Answer: 5
(4)□+36=107
Answer: 71
(5)□+2=41
Answer: 39
(6)□+22=53
Answer: 31
(7)76+□=105
Answer: 29
(8)16+□=62
Answer: 46
(9)□+34=68
Answer: 34
(10)34+□=77
Answer: 43
(11)□+85=169
Answer: 84
(12)49+□=57
Answer: 8
(13)□+73=136
Answer: 63
(14)98+□=147
Answer: 49
(15)□+79=102
Answer: 23
(16)□+63=89
Answer: 26
(17)□+55=72
Answer: 17
(18)□+78=88
Answer: 10
(19)48+□=69
Answer: 21
(20)74+□=101
Answer: 27
(21)31+□=57
Answer: 26
(22)32+□=77
Answer: 45
(23)□+87=164
Answer: 77
(24)□+21=117
Answer: 96
What to do next
More worksheets in this unit
No CarryingNo Carrying Column Calculation (2-Digit + 2-Digit)
No CarryingNo Carrying Calculation (2-Digit + 2-Digit)
No CarryingNo Carrying Fill in the Blank (2-Digit + 2-Digit)
No CarryingNo Carrying Word Problems
1 Carry1 Carry Column Calculation (2-Digit + 1-Digit)
1 Carry1 Carry Column Calculation (2-Digit + 2-Digit)
1 Carry1 Carry Calculation (2-Digit + 1-Digit)
1 Carry1 Carry Calculation (2-Digit + 2-Digit)
1 Carry1 Carry Fill in the Blank (2-Digit + 1-Digit)
1 Carry1 Carry Fill in the Blank (2-Digit + 2-Digit)
1 Carry1 Carry Word Problems
2 Carries2 Carries Column Calculation (2-Digit + 2-Digit)
2 Carries2 Carries Calculation (2-Digit + 2-Digit)
2 Carries2 Carries Fill in the Blank (2-Digit + 2-Digit)
2 Carries2 Carries Word Problems
2-Digit Addition Review2-Digit Addition Review Column Calculation
2-Digit Addition Review2-Digit Addition Review Calculation
2-Digit Addition Review2-Digit Addition Review Word Problems
