Decimal Number Sense

Place & Value

100

This is written as numbers.

Value

200

This is written as words.

Place

300

In the number 23.451, what place is the 5 in?

Hundredths

400

In the number 1,256.839, what is the value of the 9?

0.009 or 9/1000

500

If I added 18.4 and 2.9, what is the value of the tenths place?

0.3

Comparing & Rounding

100

2.9 ___ 2.858

>

200

2.231 ___ 2.18

>

300

6.32 ___ 6.6

<

400

Round 2.483 to the nearest tenth.

4.5

500

Round 7.716 to the nearest hundredth.

7.72

Expanded Form

100

Write the following in standard form: 400 + 90 + 3 + 0.08

493.08

200

Write 8.099 in expanded form (long form decimal).

(8 x 1) + (9 x 0.01) + (9 x 0.001)

300

Write 445.92 in expanded form (long form fraction).

(4 x 100) + (4 x 10) + (5 x 1) + (9 x 1/10) + (2 x 1/100)

400

Write the following in standard form: (1 x 1000) + (7 x 10) + (2 x 1) + (4 x 0.1) + (8 x 0.001)

1072.408

500

Write 105.007 in expanded form (short form fraction).

100 + 5 + 7/1000

Various Forms

100

Write the following number in standard form: nine and fourteen hundredths.

9.14

200

Write 0.203 in word form and as a fraction.

Two hundred three thousandths

203/1000

300

Write the following in standard form: sixteen and eight thousandths.

16.008

400

Write 25.174 in word form.

Twenty-five and one hundred seventy-four thousandths

500

Write the following in standard form: two hundred thirty and fifteen hundredths.

230.15

Random

100

0.625 x 10³

625

200

1289.45 (divided by) 10²

12.8945

300

When writing a number in word form, this means there is a decimal in the number.

"and"

400

48.6 + 32.408

81.008

500

32.14 - 18.7

13.44