Mentally Add & Subtract 10 and 100
140 + 20 =
160
Hope has 120 stickers.
She earns 60 more stickers.
Then she exchanges 40 stickers for a glitter pencil.
How many stickers does Hope have now?
120 + 60 = 180
180 - 40 = 140
140 Stickers
136 + 373 =
509
578 - 463 =
115
186 - __________ = 46
140
Sal has 240 stickers.
He exchanges 40 stickers for a glitter pencil and 60 stickers for a toy car.
How many stickers does Sal have now?
240 - 40 = 200
200 - 60 = 140
140 Stickers
439 + 142 =
581
336 - 218 =
118
157 - _________ = 137
20
Ann finds 63 shells.
Ann finds 30 fewer shells than Nate.
How many shells does Nate find?
63 + 30 = 93
93 Shells
388 + 274 =
662
562-371=
191
86 - _________ = 46
40
The food stand sells 78 hotdogs.
They sell 40 fewer bags of popcorn than hotdogs.
How many bags of popcorn does the food stand sell?
78 - 40 = 38
38 Popcorn Bags
546 + 238 =
784
474 - 386 =
88
530 + 230 =
760
There are 536 girls at a soccer game.
There are 100 fewer girls than boys.
How many boys are at the soccer game?
536 + 100 = 636
636 boys at the soccer game
329 + 482 =
811
684 - 296 =
388