Place Value Review, Take 2

Powers of 10

100

Write with an exponent:

10x10x10x10

10⁴

200

Write in standard form:

8x10⁶

8,000,000

300

Write an expression with an exponent. Then solve.

14x10x10x10x10x10

14x10⁵= 1,400,000

400

Asa scored 8.2x10² points in a game.

Mohamad scored 7.9x10³ points.

Who scored more points? How do you know?

Mohamad's score was higher because 7.9x10³=7,900 but Asa only scored 820 points. The exponent tells you how many times to move the decimal point.

Adjacent Places

100

True or False: 

The 2 in 425 is 10 times the value of the 2 in 132.

Explain.

True.

The 2 in 425 is worth 20. The 2 in 132 has a value of 2.

20 is 10 times 2.

200

Which number has an 8 that is 10 times the value of the 8 in 82,945?

a) 846,953

b) 18,639

c) 45,875

a) 846,953

300

Isabella read for 47.76 minutes. Complete the sentence to describe the relationship between the 7s:

The 7 in the tenths place is _________ the value of the 7 in the ones place.

1/10

400

Rylee baked 8.22 pounds of ziti for a party. Describe the relationship between the value of the twos.

The 2 in the tenths place is 10 times the value of the 2 in the hundredths place.

Or

The 2 in the hundredths place is 1/10 the value of the 2 in the tenths place.

Comparing Decimals

100

Peter ran a race in 13.06 seconds. John ran the same race in 13.6 seconds. Who ran faster? How do you know?

Peter ran faster. 0 tenths is less than 6 tenths.

200

One spotted lanternfly is 1.045 inches long. Another 1.05 inches long. Use <, >, or = to compare.

1.045       1.05

1.045<1.05

300

Sagine wants to buy a table that is 186.23 cm long. The space she has for it is 186.36. Is there enough room for the table? How do you know?

Yes, there is enough room because both have 186. 

.2<.3, so the table is smaller than the space.

400

Two swimmers were racing for the world championship. Their times were 46.910 seconds and 46.94 seconds. What was the winning time? How do you know?

46.910 because .01<.04

Ordering Decimals

100

Amber bought the following fruit for fruit salad:

1.2 lb bananas

1.04 lb apples

1.02 lb grapes

Put the weights in order from LEAST to GREATEST.

1.02, 1.04, 1.2

200

Put the rainfall in order from GREATEST to LEAST.

September 1.1 inches

October 1.005 inches

November 1.37 inches

1.37, 1.1, 1.005

300

A truck driver drove the following distances last month:

Week 1: 1,427.8 miles

Week 2: 1,397.94 miles

Week 3: 989.5 miles

Week 4: 987.68 miles

Put the distances in order from shortest to longest.

987.68

989.68

1,397.94

1,427.8

Different Ways to Name a Number

100

Write in standard form:

Two hundred eighty-seven thousand, four hundred sixteen and twelve hundredths

287,416.12

200

Write in standard form:

(5x10⁶)+(5x10⁵)+(3x10³)+(4x10²)+(1x10¹)+(8x10⁰)+(2x1/10)

Hint: Write the digits. Then put the commas.

5,503,418.2

300

Write in standard form:

Two million, two hundred twenty-two thousand, two hundred twenty-two and two tenths.

2,222,222.2