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Two-Digit Subtraction Sprint

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Played 8

About this activity

Two-digit subtraction challenges.

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United States

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Two-Digit Subtraction Sprint
 

Two-Digit Subtraction SprintOnline version

Two-digit subtraction challenges.

by Tammy
1

56 - 23 = ?

2

73 - 28 = ?

3

91 - 47 = ?

4

64 - 59 = ?

5

82 - 39 = ?

6

70 - 26 = ?

7

58 - 19 = ?

8

93 - 57 = ?

9

76 - 38 = ?

10

85 - 47 = ?

Feedback

Subtract tens: 5-2=3; units: 6-3=3; result 33.

Tens: 7-2=5; units: 3-8 borrow to get 13-8=5, overall 45.

Borrow as needed: (9-4)=5 but with borrow units: 1-7 borrow -> 11-7=4; tens becomes 8-4=4, total 44.

Units: 4-9 borrow -> 14-9=5; tens 5-5=0, so 5.

Tens: 8-3=5; units: 2-9 borrow -> 12-9=3; total 43.

Tens: 7-2=5; units: 0-6 borrow -> 10-6=4; total 44.

Tens: 5-1=4; units: 8-9 borrow -> 18-9=9; 4 and 9 combine to 39.

Tens: 9-5=4; units: 3-7 borrow -> 13-7=6; total 36.

Tens: 7-3=4; units: 6-8 borrow -> 16-8=8; total 38.

Tens: 8-4=4; units: 5-7 borrow -> 15-7=8; total 38.

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