Chapter 1 Review

A group of three digits separated by commas in a multidigit number is called a _____________.

• period

• section

• segment

• block

5 is 1/10 of _______.

• 70

• 50

• 100

• 30

800 is 10 times as much as ___________.

• 80

• 70

• 90

• 100

90 is 1/10 of _________.

• 900

• 9

• 9,000

• 950

Write the value of the underlined digit in 6,581,678.

• 80,000

• 8,000

• 800

• 8

Write the value of the underlined digit in 125,634.

• 600

• 60

• 6,000

• 6

Write the value of the underlined digit in 34,634,803.

• 4,000,000

• 400,000

• 40,000

• 4,000

Write the value of the underlined digit in 2,764,835.

• 800

• 80

• 80,000

• 500

Complete the equation: 8 x (14 + 7) = _________ + (8 x 7).

• 8 x 14

• 8 x 21

• 8 x 7

• 8 x 8

Complete the equation: 7 + (8 + 12) = (__ + __) + 12.

• 7 + 8

• 10 + 7

• 12 + 7

• 7 + 12