Subtraction with 2-Digits Numbers
22 - 11 = ?
11
237 - 122 = ?
115
Charlie has 125 oranges.
Ricky has 147 oranges.
How many more oranges does Ricky have than Charlie?
147 - 125 = 22
Ricky has 22 more oranges than Charlie.
Strategy: Regrouping
97-18 = ?
97 - 18 = 79
52 - 18 = ?
34
482 - 144 = ?
388
Peter baked 37 cookies, but 13 of them were burnt, so he threw them away.
How many cookies does Peter have now?
Peter has 24 cookies.
Strategy: Open Number Line
96 - 38 = ?
96 - 38 = 58
79 - 21 = ?
58
689 - 247 = ?
442
Robin has 529 dinosaur stickers.
She gives 112 to a friend.
How many dinosaur stickers does she have now?
Robin now has 417 dinosaur stickers.
Strategy: Compensation (Friendly Numbers!)
55 - 18 = ?
55 - 18 = ?
55-20= 35 + 2 = 37
or 57-20=37
82 - 68 = ?
14
845 - 374 = ?
471
There are 381 marshmallows and 912 popsicles. How many more popsicles are there than marshmallows?
912 - 381 = 531
There are 531 more popsicles than marshmallows.
Strategy: Place Value
(Hundreds, Tens, and Ones)
779 - 538 = ?
779 - 538 = ?
779 - 500 = 279
279 - 30 = 249
249 - 8 = 241
96 - 44 = ?
52
879 - 638 = ?
231
There are 597 cars in a parking lot. 153 cars drive away. How many cars are there now?
597 - 153 = 444
There are 444 cars now.
Strategy: Regrouping
678 - 593 = ?
678 - 593 = 85