Decimals and Fractions

Decimal and Fraction Conversion

100

What is the fraction equivalent to the decimal 0.78?

78/100

200

What is the fraction equivalent to the decimal 0.4?

4/10 

300

What is the decimal equivalent to the fraction 47/100

0.47

400

What is the decimal equivalent to the fraction 21/10?

2.1

500

What is the fraction equivalent to the decimal 44.36?

4436/1000

Mystery Number

100

The number in the hundredths place is a prime number in between 6 and 9. The ones place is 100x the value of the number in the hundredths place. The tenths place is 10x the value of the number in the hundredths place. 

7.77

200

I am a fraction. My denominator is the number of sides an octagon has. My numerator is my denominator times 12. 

96/8

300

I am a fraction. I am greater than 1/2 but less than 3/4, What am I? 

2/3 (also any answer with a percentage between 50 and 75% but half points for anything but 2/3)

400

My hundredths place has the same number of sides as a rectangle. My ones place has the same number of sides as a nonagon. My tenths place is the difference in the digits of the ones and hundredths place. 

9.54

500

I am a four digit number. I appear on cleaning solutions as __ __ . __ __% effective. (Hint ODD Digits)

99.99

Adding and Subtracting Fractions

100

What is 2/5 plus 1/5?

3/5

200

What is 18/21 plus 3/21?

21/21 or 1 whole 

300

John has 4/5 of an pizza. If he eats 3/5 of a pizza, how much pizza does he have left? 

1/5

400

You have 26 potatoes. A bandit steals 20 of the potatoes. What fraction of the original potatoes do you have left in SIMPLEST FORM. 

3/10 

500

What is 8/5 plus 14/17

206/85 MWAHAHAHAHAHAHA

Adding Decimals

100

What is 4.6 plus 3.71?

8.31

200

What is nine-tenths plus eighty-four hundredths?

One and seventy-four hundredths 

300

There are three roads in Ganio Town; Bin-Bin Road is 4.5 miles long, Harald Road is 3.72 miles long, and Watson Road is 8.39 miles long. What is the combined length of these roads? 

16.61 miles

400

Jerry makes 3.75 a week mowing lawns. Jerry also makes 8.72 cleaning pools and 18.45 doing laundry per week. What is the total amount of money jerry makes in a week?

30.92

500

What is one tenth plus one tenth plus one hundredth plus one tenth plus one hundredth plus zero. (Answer must be in word form and spelled correctly :))

thirty two hundredths 

Subtracting Decimals

100

What is 3.8 minus 2.47

1.33

200

What is nine tenths minus twenty-seven hundredths? 

sixty-three hundredths 

300

There are two trails in Poolville: Harry Potter Trail is 19.7 miles long. Draco Malfoy Trail is 2.33 miles long. What is the difference between these two trails. 

17.37 miles

400

Tom has $18.45. Larry has $2.52. Sara has $9.20. Beth has $22.91. What is the difference between Beth and Larry's money. 

$20.39 

500

What is 399,999,999.01 minus 398,989,289.89

1,010,709.12