Unit 5 Review

Vocabulary

100

One way to estimate a number is to_______ the number.

What is round?

200

In the number 3.072, the digit 7 is in the _________ place and the digit 2 is in the ___________ place.

What is hundredths and thousandths?

300

Using 50 for the number of weeks in a year is a(n)________

What is an estimate?

400

numbers that are easy to add, subtract, multiply, or divide mentally. They are close in value to the actual numbers, which makes estimating the answer and solving problems easier

What are compatible numbers?

500

a product of two numbers obtained when we break the numbers into parts, multiply the parts separately, and then add them together.

What is a partial product?

Vocabulary II

100

In the equation 80 ÷ 10 = 8, the number 80 is the ______________

What is the dividend?

200

The number used to divide another number is the _______________

what is a divisor?

300

The result of dividing two numbers is the ___________

quotient

400

the portion of the dividend that cannot be fairly divided by the divisor

What is the remainder?

500

a sentence with a minimum of two numbers or variables and at least one math operation. This math operation can be addition, subtraction, multiplication, or division

What is an expression?

Multiply Numbers by Powers of 10

100

90 x 10⁴

What is 90,000?

200

10³ x 38

What is 38,000?

300

500,000 = 50 x 10^--

What is to the power of 4?

400

10^-- x 374 = 37,400

What is to the power of 2?

500

10⁴ x ____= 520,000

What is 52?

Estimation

100

156 ÷ 12

Between 10~20

200

512 ÷ 16 =

Between 30 ~ 40

300

286 ÷ 22

Between 10 ~ 20

400

576 ÷ 24

Between 20~30

500

834 ÷ 15

Between 50 ~ 60

Division

100

196 ÷ 14

What is 14?

200

544 ÷ 17

What is 32?

300

875 ÷ 46

19 r 1

400

1,013 ÷ 25

What is 40 r 13?

500

4,632 ÷ 14

What is 330 r 12?