Unit 1 Test Review

What is nine and seven hundred fifty-two thousandths written in standard form?

• 9,752

• 97.52

• 9.752

• 975.2

Answer explanation

Standard form is just the number written in digits.

What is 450,900,420 written in expanded form?

• 4,000 + 500 + 90 + 40 + 2

• 400,000 + 5,000,000 + 900 + 4 + 2

• 400,000,000 + 5,000,000 + 90,000 + 40 + 2

• 400,000,000 + 50,000,000 + 900,000 + 400 + 20

Answer explanation

Expanded form is the number written with the value of each digit added together.

What is the difference between 65.2 and 62.9?

• 2.1

• 2.2

• 2.3

• 2.4

Answer explanation

Make sure to line up your decimals before you add or subtract!

What is 45,569 + 24,789?

• 70,256

• 70,358

• 70,361

• 70,354

Answer explanation

Always double check to make sure your sum is correct!

What is 14.95 rounded to the nearest tenth?

• 14.90

• 15.00

• 14.95

• 141.00

Answer explanation

4 or less - LET IT REST.

5 or more - ADD ONE MORE.

What is 205,600,000

• Two hundred five thousand

• Two hundred five thousand, six hundred

• Two hundred five million, six hundred

• Two hundred five million, six hundred thousand

Answer explanation

Make sure you are adding those place value words!

What is 0.53 rounded to the nearest tenth?

• 0.5

• 5.0

• 0.6

• 0.53

Answer explanation

Remember that 0.50 and 0.5 have the same value!

What is 32.10 + 54.28 + 62.14?

• 148.50

• 14.852

• 126.32

• 148.52

Answer explanation

Remember to line up those decimals!

What number is greater than 2.53 and less than 3.17?

• 2.20

• 2.41

• 3.02

• 3.18

Answer explanation

Pay attention to place value and compare!

What is 50.62 written in expanded notation?

• (5 x 10) + (6 x $\frac{1}{10}$ ) + (2 x $\frac{1}{100}$ )

• (5 x 1) + (6 x $\frac{1}{10}$ ) + (2 x $\frac{1}{100}$ )

• (5 x 10) + (6 x 1) + (2 x $\frac{1}{100}$

• (5 x 10) + (6 x 1) + (2 x $\frac{1}{10}$ )

Answer explanation

Expanded notation uses parenthesis, multiplication, and addition!