Math Review

Write the number shown by the words.

Eight hundred fifty-one

• 855

• 851

• 800

• 850

Peter has 210 dollars. His mom gives him 289 more, and then he gives 302 to Isaac. He says that he has 408 dollars left. Is his answer reasonable? Explain and then find the actual answer to check if you are correct.

823+973=

7 tens+9 hundreds+ 7 ones

• 970

• 797

• 779

• 977

Claire has 86 boxes of cookies to sell. Each box contains 10 cookies. How many cookies does she have to sell?

8 ones+3 hundreds+ 4 tens

The zoo has 243 animals. They have 134 monkeys and 109 elephants. Write a subtraction word problem related to the animals at the zoo. Then find the answer without doing any calculations.

What number is this?

• 21

• 3,021

• 303

• 321

There are 134 chocolate donuts, 327 glazed donuts, and 213 cherry donuts. How many total donuts are at the bakery?

Round $4.87 to the nearest dollar.

• $4.80

• $4.90

• $5.00

• $4.00