Mental Math
Use mental math to solve 214 - 10.
204
Draw place-value blocks to find the difference of
328-133.
195
Use a number line to subtract 573 -459.
114
Kim had 455 shells. First, she gives 134 shells to a friend. Then she finds 54 more shells. How many shells does she have now.
455 - 134 = 321
321 + 54 = 375
375 shells
I have 3 sides and 3 corners. What shape am I?
triangle
Use mental math to solve 328 - 100.
228
Draw place-value blocks to find the difference of
485-136.
349
Use a number line to subtract 672 -547.
125
Second Grade wants to sell 10 more baseball tickets than First Grade. First Grade sold 476 tickets. Second Grade sold 439 tickets.
How many more tickets does Second Grade need to sell to reach their goal?
439 + 10 = 486
486 - 439 = 47
47 tickets
I am a shape with 4 sides. All of my sides are the same length. What am I?
square
Use mental math to solve 250-10.
240
Draw place-value blocks to find the difference of
598-319
278
Use a number line to subtract 530 - 318.
212
There are 463 adults and 264 children at a movie. How many more adults than children are at the movie?
463 - 264 = 199
I have more than 3 sides but fewer than 6. What shape could I be?
rectangle, trapezoid, pentagon, square, quadrilateral
Fill in the missing number from this equation 700 - ? = 690
10
Draw place-value blocks to find the difference of
794-452.
342
Use a number line to subtract 802 - 668.
134
Liam had 612 baseball cards. He gave 198 cards to his cousin. Then he bought 76 more cards at the store.
How many baseball cards does Liam have now?
612 − 198 = 414
414 + 76 = 490
490 baseball cards
I have no corners and no straight sides. What shape could I be?
circle or oval
Fill in the missing number from this equation 215 - ? =205
10
Draw place-value blocks to find the difference of
871-355.
516
Use a number line to subtract 735 - 429.
306
Ava had 347 stickers. She gave 121 to her friend.
How many stickers does Ava have now?
347 − 121 = 226
I am a 3D shape. I have 6 flat faces, all shaped like squares. What shape am I?