Basic facts
Convert 0.5 to a fraction
1/2
Convert 1/2 to a percent.
50%
What is 50% as a decimal and a fraction?
0.5 and 1/2
A student scored 9 out of 10. What percent did they earn?
90%
Convert 0.09 to a fraction and a percent.
9/100, 9%
Write 1/4 as a decimal.
.25
Write 2/5 as a decimal and a percent.
0.4 and 40%
Find 10% of 50.
5
A bottle holds 0.5 liter. How many milliliters is that? Also write as a fraction of a liter.
500ml. 1/2L
Which is greater: 1/3 or 0.32? Show how you compare quickly.
1/3 ≈ 0.333, so 1/3 is greater than 0.32
Which is larger: 0.75 or 3/4?
They are equal
Convert 3/4 to a decimal and a percent.
0.75 and 75%
Convert 0.2 to a percent.
20%
A fundraiser reached 110% of its goal. If the goal was $100, how much did they raise?
$110
Express 125% as a decimal and as a mixed number.
1.25 as decimal; mixed number = 1 1/4
Convert 0.25 to a fraction
1/4
A recipe needs 1/3 cup of sugar. What is that as a decimal (rounded to two decimals)?
0.33 (rounded from 0.333...)
A shirt is $20 with 25% off. What is the sale price?
Discount $5 → sale price $15
A piece of rope is 2.0 meters. How many centimeters is that?
200cm
Convert 11/20 to a decimal and then to a percent.
11/20 = 0.55; 55%
Convert 0.333 (rounded repeating) to a fraction
1/3
Convert 5/8 to a decimal (to three decimal places) and to a percent (to one decimal place).
0.625
62.5%
If 15 is 30% of a number, what is the whole number?
Whole = 50
A recipe scaled to 150% needs 300 g flour. What was the original amount?
200g
A $100 item is increased by 10% and then decreased by 10%. Is the final price the same as the original? Explain with the numbers.
No. $100 → +10% = $110 → −10% = $99. Final is lower.