Area and Volume
Area of a rectangle with a length of 40 cm and a width of 30 cm
40 x 30 = 1200 cm2
60 ÷ 5 + 24
36
3/4 ÷ 2
3/4 x 1/2 = 3/8
3, 8, 7
3 + 8 + 7 = 18
18 ÷ 3 = 6
Richard had 150 fruit buns. He sold 2/5 of them and packed the remainder equally into 5 boxes. How many were in each box?
2/5 of 150 = 60 fruit buns
150 - 60 = 90 fruit buns left
90 ÷ 5 = 18 in each box
Volume of a tank with a length of 12 cm, width of 5 cm, and height of 10 cm
12 x 5 x 10 = 600 cm3
7 x 9 + 1 ÷ 1 - 6 x 3
46
3 ÷ 3/4
3 x 4/3 = 12/3 = 4
20, 18, 36, and 98
20 + 18 + 36 + 98 = 172
172 ÷ 4 = 43
Richard had 400 fruit buns. Of them, 5/8 were apple fruit buns and the rest were cherry fruit buns. He gave 1/5 of the apple fruit buns to Fisher. How many fruit buns did he have left?
5/8 of 400 = 250 apple fruit buns
1/5 of 250 = 50 apple fruit buns to Fisher
400 - 50 = 350 fruit buns left
15 x 20 divided by 2 = 150 cm2
(108 + 12) ÷ 5 x 6
144
4/5 ÷ 1/2
4/5 x 2/1 = 8/5 = 1 3/5
25, 18, 32, 29
25 + 18 + 32 + 29 = 104
104 ÷ 4 = 26
There are 50 fruit buns in a box. Of them, 3/10 have gone stale. How many fruit buns are NOT stale?
3/10 of 50 = 15 stale fruit buns
50 - 15 = 35 good fruit buns
Length of one side of a square with an area of 64 cm2
8 cm
300 ÷ (8 + 2) x 10
300
2/5 ÷ 3/10
2/5 x 10/3 = 20/15 = 1 5/15 = 1 1/3
$3.70, $4.25, $4.50
3.70 + 4.25 + 4.50 = 12.45
12.45 ÷ 3 = 4.15
Richard ate 2/5 of his fruit buns and had 60 left. How many fruit buns did he have at first?
3/5 = 60
1/5 = 60 ÷ 3 = 20
5/5 = 20 x 5 = 100 fruit buns at first
Length of a side of a cube if the volume is 64 cm3
4 cm
92 - 3 x [42 - 2 x (13 - 6)] ÷ 2
50
2/7 ÷ 3/5
2/7 x 5/3 = 10/21
12.5, 14.7, 12.4
12.5 + 14.7 + 12.4 = 39.6
39.6 ÷ 3 = 13.2
Richard made 2,640 fruit buns to share equally with everyone in the class. There were 20 students in the class. How many fruit buns did each student get?
2640 ÷ 20 = 132