Unit 3 Math Review

How can you show twenty-one in different ways? Choose all the correct answers.

• 12

• 21

• 20 + 1

• 10 + 2

What are different ways to show the number 15? Choose all the correct answers.

• 0 tens + 15 ones

• 5 tens + 1 one

• 5 tens + 5 ones

• 1 ten + 5 ones

Which words correctly compare the numbers?

38 is _________ 83

• equal to

• greater than

• less than

Cliff sorts his apples into 6 baskets. He puts 10 apples in each basket. How many apples does cliff have?

• 4 apples

• 16 apples

• 60 apples

Which sets of base-ten blocks show 82. Choose all the correct answers.

• 
• 
• 
• 

Is the comparison true? Choose True or False.

45 is greater than 61.

• True

• False

Is the comparison true? Choose True or False.

38 is less than 72.

• True

• False

How can you compare the numbers? Choose <, >, or =.

64 ___ 61

• <

• >

• =