Review

The average mass of a set of 4 wooden blocks is 52 g. A fifth wooden block of mass 67 g is added to the set. What is the average mass of the set of 5 wooden blocks now?

• 54

• 55

• 56

• 57

A Ferris wheel operated for 12 hours. It made 4 complete rounds per hour. At this rate, how many complete rounds did the Ferris wheel make altogether?

• 44

• 46

• 48

• 45

• 8

• 16

• 24

• 48

Find the area of triangle

• 945

• 955

• 930

• 900

The figure PQRST is made up of a square PQRV and triangles PVT and TRS. TR 􏰃 7 cm, 􏰇STR = 90° and PQ 􏰃 QR 􏰃 TS 􏰃 4 cm. Find the area of the figure.

• 48

• 24

• 35

• 36

Chris has 96 local and foreign stamps altogether in his collection. The ratio of the number of local stamps to foreign stamps is 1 : 3. How many local stamps does Chris have?

• 22

• 23

• 24

• 25

There are some angelfish and 18 swordtails in an aquarium. The ratio of the number of angelfish to the number of swordtails in the aquarium is 1 : 3. How many more swordtails than angelfish are there in the aquarium?

• 10 more

• 12 more

• 8 more

• 6 more

The ages of three siblings, Leon, Kelly and Jack are in the ratio 3 : 5 : 6. The sum of their ages is 42 years. How old is Kelly?

• 15

• 12

• 18

• 20

The length of a cuboid is 12 cm. Its length is twice its breadth and its height is 13 cm. Find the volume of the cuboid.

• 945

• 936

• 900

• 910

write in liters and milliliters 5040cm³

• 5 l 40 ml

• 5 l 400 ml

• 5 l 4 ml

• 50 l 40 ml