5.2 ABC Place Value, Compare, Order, and Round Decimals

A scientist measured a grain of sand. It had a diameter of 0.049 millimeter. What is 0.049 written in word form?

• forty-nine

• forty-nine tenths

• forty-nine hundredths

• forty-nine thousandths

The mass of an ant is about 0.003 gram. What is the value of the digit 3 in 0.003?

• 3 ones

• 3 tenths

• 3 hundredths

• 3 thousandths

What is the value of 5 in 6.056

• 0.5

• 5

• 0.05

• 0.005

What is the expanded notation of 34.078

• (34 x 1) + (7 x 0.01) + ( 8 x 100)

• (3 x 10)+ ( 4 x 1) + (7 x 0.01) + (8 x 0.001)

• (3 x 10) + (4 x 1) + (7 x 0.1) + (8 x 0.01)

Standard form of (5 x1) + (4 x 0.01) + (9 x 0.001)

• 50.49

• 5.49

• 5.049

• 5.0049

The value of 7 in 45.078

• 7 tens

• 7 ones

• 7 tenths

• 7 hundredths

Use the >,<, or=

0.07____ 0.7

• <

• >

• =

Tammy, Kelley, and Jim love reading books. Tammy read 7.75 hours last month. Kelley read 7.69 hours. Jim read 7.075 hours. Who spent the most time reading?

• Tammy

• Kelley

• Jim

Order the decimals from least to greatest

0.38, 0.4, 0.36

• 0.38, 0.4, 0.36

• 0.4, 0.36, 0.38

• 0.36, 0.4, 0.48

• 0.36, 0.38, 0.4

Order from least to greatest.

1.25 1.52 1.02 1.50

• 1.25 1.52 1.02 1.50

• 1.52 1.02 1.50 1.25

• 1.02 1.50 1.25 1.52

• 1.02 1.25 1.50 1.52