1.Determine the best metric unit for the following.
(a)length of a book
(b)weight of a computer
(c)amount of water in a small glass
(d)height of a giraffe
(e)amount of oil in an oil tanker truck
(f)weight of a telephone
(g)thickness of a computer disk
(h)weight of a paperclip
(i)distance between Fujairah and Al Ain
(j)weight of an elephant
(k)amount of water in a swimming pool
2.Circle the most sensible measurement for each of the following.
(a)The height of a villa.
15 m60 cm8 m2 m
(b)The weight of a baby.
35 g4 kg25 kg700 g
(c)The amount of milk in a bottle.
8 L30 mL300 mL1 L
(d)The weight of a stapler.
190 g5 kg500 g15 kg
(e)The height of a room.
4 m15 m600 cm900 mm
(f)The weight of a calculator.
2 kg500 mg120 g700 g
(g)The length of a pair of scissors.
1 m30 mm22 cm50 cm
(h)The amount of perfume in a bottle.
5 L15 mL500 mL1 L
(i)The weight of a telephone.
800 g5 kg900 mg50 g
3.Write down the reading from the ruler.
(a)
3 / 415 cm 16
(b)
3 / 47 cm 8
(c)
3 / 418 cm 19
(d)
3 / 440 cm 41
(e)
3 / 459 cm 60
(f)
3 / 411 cm 12
4.Write down the reading from the tape measure.
(a)
1 / 2 / 35 / 0 m
(b)
1 / 2 / 32 / 0 m
m
(c)
1 / 2 / 38 / 0 m
(d)
1 / 2 / 33 / 0 m
5.Write down the reading from the scale.
9 kg 100 200 300 400500 600
6.Write down the reading from the scale.
5kg 100 200300 400500
7.Use your ruler to measure the following lines in millimetres.
(a)
(b)
(c)
8.Use your ruler to measure the following lines in centimetres.
(a)
(b)
(c)
9.Find the perimeter of a rectangle with a length of 2.8 m and a width of 0.4 m.
10.Calculate the circumference of a circle with a radius of 11.73 mm. Write your answer to 2 d.p.
11.What is the perimeter of a square with a side of 7.5 cm?
12.Find the circumference of a circle with a diameter of 12 cm. Write your answer to 3 d.p.
13.Find the perimeter of a triangle with sides 2.7 cm, 4.8 cm and 3.1 cm.
14.Find the perimeter of a rectangle with a length of cm and a width of cm.
15.Fencing costs Dh 82.50 per meter. How much will it cost to put a rectangular fence around an field that is 24 m wide and 33 m long?
16.Find the cost of the ribbon needed to place around a circular table with a diameter of 2.4 m. Ribbon costs Dh 4 per metre.
17.Find the area of a circle with diameter 3 cm to 3 d.p.
18.Find the area of a triangle with base 25 cm and height 14 cm.
19.Find the area of a rectangle with a width of 2.7 mm and a length of 3.5 cm.
20.Find the cost of plastering a wall 4 m long and 3 m wide. The cost of plastering is Dh 12.50 per square metre.
21.A can of paint covers 2.5 m2 of a wall. How many cans are needed to paint a 6 m by 6 m wall?
22.Planting costs Dh 75 per square metre. Find the cost of planting a circular field with a radius of 21 metres.
23.Find the volume of a cuboid with length 15 cm, width 11 cm and height of 13 cm.
24.Find the volume of a cylinder with a radius of 3 cm and a height of 16 cm. Write your answer to 1 d.p.
25.Find the volume of a ball whose diameter is 30 mm. Write your answer to the nearest cubic millimetre.
26.Water costs Dh 6 per cubic metre. How much will it cost to fill half a pool whose length is 30 m, width is 14 m and height is 2 m?
27.A company charges Dh 21 for each cubic metre of space. Find the total charge for storing 25 identical boxes whose dimensions are 2 m by 2m by 2 m each.
28.A factory requires three quarters of a gas tank every week at a cost of Dh 18 per cubic metre. Find the total weekly cost of gas if the tank has a cylindrical shape with a radius of 1.5 m and a height of 6 m.
29.Water costs Dh 5.50 per cubic metre. How much will it cost to fill a sphere whose diameter is 3.7 m?
- Find the perimeter, in cm, of the following shape.
31.Find the shaded area of the following shape to the nearest whole number.
32.Calculate the perimeter and area of the following shapes. Express your answer to 1 d.p when necessary:
(a)
(b)
(c)
(d)
ANSWERS
1a) cmb) kgc) mLd) me) Lf) g
g) mmh) mgi) kmj) kgk) L
2a) 8 mb) 4 kgc) 1 Ld) 190 g e) 4mf) 120 g
g) 22 cmh) 15 mLi) 800 g
3a) 15.7 cmb) 7.3 cmc) 18.8 cmd) 41.2 cm
e) 59.75 cmf) 12.25 cm
4a) 51.2 mb) 22.4 mc) 81.75 md) 32.75 m
5a) 9 kg, 90 gor9.09 kg
b) 9 kg, 250 gor9.25 kg
c) 9 kg, 400 gor 9.4 kg
d) 9 kg, 530 gor9.53 kg
6a) 5 kg, 80 gor5.08 kg
b) 5 kg, 240 gor5.24 kg
c) 5 kg, 360 gor 5.36 kg
d) 5 kg, 500 gor5.5 kg
7a) 81 mmb) 46 mmc) 111 mm
8a) 6.1 cmb) 9.6 cmc) 8.1 cm
9)6.4 m
10)73.70 mm
11)30 cm
12)37.700 cm
13)10.6 cm
14) cm
15)Dh 9405
16)Dh 30.16
17)7.069 cm2
18)175 cm2
19)0.945 cm2 or 94.5 mm2
20)Dh 150
21)15 cans
22)Dh 103 908.18
23)2145 cm3
24)452.4 cm3
25)14 137 mm3
26)Dh 2520
27)Dh 4200
28)Dh 572.56
29)Dh 145.87
30)31.8 cm
31)335 cm2
32)a) perimeter 36 cm, area 66 cm2b) perimeter 29.9 cm, area 32.7 cm2
c) perimeter 41.4 m, area 91.1 m2 d) perimeter 34 cm, area 50 cm2
Math070 review 3b GP