Decimals Test

Word names/Expanded Form

100

Three hundred five and twenty-six thousandths

305.026

200

15.0006

fifteen and six ten-thousandths

300

29.043 in expanded form

(2 x 10¹)+(9 x 10⁰)+(4 x 10^-2)+(3 x 10^-3)

400

Write in standard form.

(3 x 10²)+(4 x 10^-1)+(8 x 10^-3)

300.408

500

Write in standard form.

4.3 x 10⁶

4,300,000

Compare and Order and Rounding

100

0.036     0.03099

greater than

200

-2.56        -2.098

less than

300

round to the nearest whole number.

406.087

406

400

round to the nearest cent.

$45.6799

$45.68

500

Write in scientific notation.

50,670,000,000

5.067 x 10¹⁰

Adding/Subtracting

100

-0.7 + -4.34

-5.04

200

-8 + 0.09

-7.91

300

7.4 - 2.056

5.344

400

-6 - 5.03

-11.03

500

-7.8 - 9.02

-16.82

Multiplying/Dividing

100

(-6.2)(-0.4)

2.48

200

1.05/0.7

1.5

300

(-0.23)(6)

-1.38

400

-0.275/0.11

-2.5

500

(3)(0.4)(-2.1)

-2.52

Expressions/Equations

100

Evaluate 3a - 4 when a = 1.7

1.1

200

Evaluate xy when x = 0.7 and y = -3.4

-2.38

300

Solve   x + 9.4 = 17

x = 7.6

400

Solve  0.3x = 21.24

x = 70.8

500

Solve    x/4.7 = -0.08

x = -0.376