Converting
Convert decimal into percentage
0.72
72%
There are 10 white marbles and 5 blue marbles. What is the ratio of white to blue marbles?
10:5
20% of 70
14
John bought 25 balloons. 7 balloons are red. What is the percentage of balloons that are red?
28%
The ratio of boys to girls is 1:2, if there's 12 boys how many girls are there?
24
Convert percentage into decimal
117%
1.17
Write 2 equivalent ratios to 3 / 4.
Many answers are possible.
Ex : 12/16, 16/20
52% of 200
104
A container contains 60 liters of cooking oil. Last month mother used 35% of cooking oil. How many liters of cooking oil are left in the container?
39 liters
The ratio of apples to oranges is 2:3, if there's 30 oranges how many apples are there?
20
Convert percentage into fraction
48%
12/25
There are 2 red blocks, 3 orange blocks, and 4 black blocks. What is the ratio of all to black blocks?
9:4
65% of 220
143
A headphones are priced at 920 Baht. A discount of 15% is given. How much do you need to pay for headphones?
782 Baht
There are some peanuts and almonds in a packet. The proportion of peanuts is 2/3 of the total number of nuts in the packet.
What proportion of nuts in the packet are almonds
1/3
Convert fraction into percentage
3/5
60%
Which ratio is different from the others?
a) 1 : 7 b) 2 : 5 c) 4 : 10 d) 8 : 20
a) 1 : 7
22% of 350
77
The price tag on flash drive is 590 Baht. The flash drive is sold for 413 Baht. What is the percentage discount?
30%
The number of stamps that Ming has is 11/5 of the number of stamps that Fiona has. If Ming has 22 stamps, how many stamps does Fiona have?
10 stamps
Convert percentage to fractions in its simplest form
35 %
7/20
Jodi, Kyle, and James have different toys. Jodi has 7 dolls, Kyle has 15 marbles, and James has 8 cars. Write the ratio of toys Kyle has to total toys
15:30
96 % of 50 ?
48
There were 1300 people at a concert. 1/2 of them were women. 46% of them were men and the rest were children. How many children were there at the concert?
52 children
There are 3 times as many novels as comic books in a bookstore. If there are 2480 books altogether, how many comic books are there in the bookstore?
620 comic books