Place Value
Powers of Ten
Standard, Expanded, and Word Form
Reading and Comparing Decimals
Rounding Decimals
100

What is the value of the 8 in 5,271.98?

0.08

(8 hundredths)

100

What is the vocabulary word used to refer to the 3 in 103?

exponent

100

Number names are also referred to as _____ form.

Number names are also referred to as word form.

100

Which symbol do we use to show "greater than"?

> is used to show that something is greater than.

100

Complete this phrase to make it true.
We add 1 to the target when the digit to the right of the target is ___ or more.

We add 1 to the target when the digit to the right of the target is 5 or more.

200

What is the next number in this pattern?

500, 50, 5, 0.5, ____

500, 50, 5, 0.5, 0.05

200

How do you read 104 aloud?

104 is read as 10 to the 4th power.

200

Write this number in word form.

56.9

56.9 in word form is fifty-six and nine tenths.

200

Use comparison symbols to make this statement true.

401 ___ 4,101

401 < 4,101

200

Round 0.41 to the nearest tenth.

0.41 rounded to the nearest tenth is 0.4

300

True or false: 635.7 is 10 times the value of 63.57.

True: 635.7 is 10 times the value of 63.57.

300

Write this power of 10 in standard form.

105

105 is 100,000 in standard form.

300

Write the standard form of this expanded form.

200 + 90 + 1 + 0.6 + 0.03

200 + 90 + 1 + 0.6 + 0.03 is 291.63 in standard form.

300

Use comparison symbols to make this statement true.

3.051 ___ 0.15

3.051 > 0.15

300

Round 34.129 to the nearest hundredth.

34.129 rounded to the nearest hundredth is 34.13.

400

Name the digit and place that is 1/10 the value of the digit in the tens place.

588.8

The 8 in the ones place is 1/10 the value of the digit in the tens place in 588.8.

400

If you wanted to write 100 as a power of 10 using an exponent, what would your exponent be?

2

400

Write 6.084 in expanded form.

You may write your answer in any of the ways you learned to write expanded form.

6 + 0.08 + 0.004

6 + 8/100 + 4/1000

(6 x 1) + (8 x 0.01) + (4 x 0.001)

(6 x 1) + (8x 1/100) + (4 x 1/1000)

400

Order these numbers from least to greatest.

43.21, 0.431, 4.09

Least --> Greatest

0.431, 4.09, 43.21

400

Round 8.607 to the nearest whole.

8.607 rounded to the nearest whole is 9.

500

Explain the relationship between the two 7s in this number: 1,097,572.6

The value of the 7 in the thousands place is 100 times as great as the value of the 7 in the tens place.  The value of the 7 in the tens place is 1/100 as great as the value of the 7 in the thousands place.  The value of the 7 in the thousands place is 7,000.  The value of the 7 in the tens place is 70.

500

Mary and Joe are having a baking competition.  They want to see who can decorate the most cookies in 10 minutes.  Mary decorated 275 cookies.  Joe decorated 3 x 102 cookies.  How many cookies did Joe decorate?  How many more cookies did Joe decorate than Mary?

Joe decorated 300 cookies.

Joe decorated 15 more cookies than Mary.

500

Alex's teacher told him to write 0.432 in expanded form.  He wrote (4 x 0.1) + (3 x 0.1) + (2 x 0.001).  What did he do wrong?  Write the decimal expanded form correctly.

Alex multiplied the 3 by 0.1, but the 3 should be multiplied by 0.01 since the 3 is in the hundredths place.

The correct expanded form of 0.432 is (4 x 0.1) + (3 x 0.01) + (2 x 0.001).

500

Lauren has 2.741 pounds of broccoli.  Pat has 2.755 pounds of broccoli.  Who has more?  Explain how you know.

Pat has more broccoli.

I know this because both Lauren and Pat have a 2 in the ones place and a 7 in the tenths place.  Lauren has a 4 in the hundredths place, and Pat has a 5 in the hundredths place. Since 5 is greater than 4, Pat's broccoli weight of 2.755 pounds is greater than Lauren's broccoli weight of 2.741 pounds.

500

Kyra ran a race in 23.016 seconds.  What is this number rounded to the nearest hundredth?  Explain how you know.

23.016 rounded to the nearest hundredth is 23.02 seconds.

My target was the 1.  The digit to the right of my target was 6.  Since 6 is 5 more, I needed to add 1 to my target. Now, I have a 2 in the hundredths place.  The digits to the right of my target become 0s.  The digits to the left of my target stay the same. 23.020 is the same as 23.02.