Category 1
300+20+2
322
43 + 89 =
132
1000+200 + 20 + 4
1224
Round to the nearest 10
96
100
75 + 69
144
7 hundreds + 6 tens + 4 ones
764
True or false
700 + 4 + 6 is 746?
False that is 710
534+265
799
6 thousands + 4 hundreds + 9 tens +0 ones
6490
True or false
500 + 20 + 4 is 524
True
What is both ways this number can be written in expanded form?
832
800+30+2
8 hundreds, 30 tens, 2 ones
435-155
280
How many ways can we write 746?
7 hundreds + 4 tens + 6 ones
700 + 40 + 6
Proof Drawing
round 41 to the nearest 10
40
Is the following equation reasonable?
439-148=191
No because 439-148 is 291
801-435
366
A museum has 492 butterflies. It has 317 beetles. Round each number to the nearest ten to estimate about how many more butterflies the museum has than beetles.
about 170 more butterflies
Round 456 to the nearest 100
500
Gordon bakes 346 blueberry muffins and 287 bran muffins. How many muffins does Gordon bake?
633
600 - 162
438
Liam had 36 pokemon cards. 14 were charmander, 12 were pikachu and the rest were Bulbasaur. How many of the pokemon cards were bulbasaur?
10
A bookstore sells 516 books and magazines. The store
sells 256 fiction books and 82 nonfiction books.
The rest are magazines. How many magazines does the bookstore sell?
178
Kate has 630 pictures on her computer. She has 186 pictures of family and 329 pictures of friends. The rest are pictures of her pets. Write and solve an equation to find how many pictures Kate has of her pets.
115
540 - 388=
152
Is this reasonable?
Parker has 425 baseball cards. He gives 125 of them to his brother. Then his cousin gives him 285 baseball cards. Parker says he now has 833 baseball cards.
No. The answer should be closer to an estimate of 600: 400 - 100 + 300 = 600.