Decimal Jeopardy

Place Value

100

Write the base ten numeral for "three hundred forty-seven thousandths."

0.347

200

Fill in the missing expanded form for 6.025 using place-value multiplication

6.025 = (6×1)+(0×1/10)+(2×1/100)+(5×1/1000)

300

The expanded form shown is (5×1)+(2×1/10)+(7×1/100)+(6×1/1000). Write the base ten numeral (standard form).

5.276

400

Write the number name for 0.306

Three hundred six thousandths 

500

For base ten numeral 0.347 give the Number Name and Expanded Form.

Three hundred forty seven thousandths 

(3 x 1/10) + (4 x 1/100) + (7 x 1/1000)= 

Compare and Order Decimals

100

Which symbol makes this true: 0.15 [   ] 0.80

<

200

Which symbol makes this true: 0.308 [    ] 0.380

<

300

Which symbol makes this true: 9.326 [    ] 9.236

>

400

Put these four numbers in order from least to greatest: 0.403, 0.304, 0.034, 0.934, 0.403, 0.304, 0.034, 0.934

0.034, 0.304, 0.403, 0.9340.034, 0.304, 0.403, 0.934

500

On a blank number line from 0 to 1, mark approximately where 0.034 and 0.934 would be and explain why they are placed there (short answer).

Depends

Rounding Decimals

100

Round 7.902 to the nearest tenth.

7.9

200

Round 7.902 to the nearest 1

8

300

Round 7.902 to the nearest hundredth

7.90

400

Round 28.375 to the nearest 1, nearest tenth, and nearest hundredth (three answers)

28

28.4

28.38

500

Explain how to decide whether to round up or down when rounding 28.375 to the nearest tenth. Then give the rounded result.

If the number is 5 or greater, you round up 

If the number is 4 or less, you round down

28.4

Adding & Subtracting Decimals

100

3.98 + 4.77=

8.75

200

8.75 − 5.4=

3.35

300

82.4 + 56.3=

138.7

400

2.98 + 4.25 = 

and 

4.03 − 1.70=

2.98 + 4.25= 7.23

and

 4.03 − 1.70= 2.33

500

82.4+56.3, 

2.98+4.25

4.03−1.70

and 

1.84−0.97

• 82.4 + 56.3= 138.7
• 2.98 + 4.25= 7.23
• 4.03 − 1.70= 2.33
• 1.84 − 0.97= 0.87

Conversions & Word Problems

100

If one ticket costs $2.65, how much money do 10 people pay? (Use multiplication.)

$26.50

200

If one ticket costs $2.65, how much money do 100 tickets cost? (Use multiplication.)

$265

300

How many grams are in 784 kg?

1 gram is 1,000 milligrams 

& 

1 kilogram is 1,000 grams  

784,000

400

Convert 6.2 g to milligrams

1 gram is 1,000 milligrams 

& 

1 kilogram is 1,000 grams  

62,000

500

Sara noticed that multiplying by 10 moves the decimal point one place to the right. Explain why multiplying a number by 10, 100, or 1000 moves the decimal point right and describe what happens to the number of zeros when multiplying by powers of 10. What happens is you are dividing by multiples of 10.

Explanations vary