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Grade 4 Mathematics Revision (ANSWER KEY)

Quarter 4 SY 2014-15

÷1000 km ÷100 m ×1000

÷10 cm ×100 mm ×10

Complete the following. Use the guide above if you need.

Show your work.

8 cm = mm 8 x 10 = 80mm

5 cm = mm 5 x 10 = 50mm

500 cm = m 500 ÷ 100 = 5m

700 cm = m 700 ÷ 100 = 7m

9000 cm = m 9000 ÷ 100 = 90m

9 m = cm 9 x 100 = 900cm

8 m = cm 8 x 100 = 800cm

32 m = cm 32 x 100 = 3200cm

548 m = cm 548 x 100 = 54800cm

97 m = mm (97 x 100) x 10 = 97000mm

5 km = m 5 x 1000 = 5000m

7 km = m 7 x 1000 = 7000m

27 km = m 27 x 1000 = 27000m

30000 m = km 30000 ÷ 1000 = 30km

52000 m = km 52000 ÷ 1000 = 52km

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 2 of 12

Complete the following. Use the guide above if you need.

Show your work.

5 kg = g 5 x 1000 = 5000g

7 kg = g 7 x 1000 = 7000g

23 kg = g 23 x 1000 = 23000g

1. 7 kg = g 1.7 x 1000 = 1700g

15.3 kg = g 15.3 x 1000 = 15300g

8.2 kg = g 8.2 x 1000 = 8200g

4.5 kg = g 4.5 x 1000 = 4500g

6.3 kg = g 6.3 x 1000 = 6300g

6000 g = kg 6000 ÷ 1000 = 6kg

15000 g = kg 15000 ÷ 1000 = 15kg

3200 g = kg 3200 ÷ 1000 = 3.2kg

4500 g = kg 4500 ÷ 1000 = 4.5kg

6300 g = kg 6300 ÷ 1000 = 6.3kg

2800 g = kg 2800 ÷ 1000 = 2.8kg

5900 g = kg 5900 ÷ 1000 = 5.9kg

÷1000 kg g ×1000

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 3 of 12

Answer the following problems.

10 packets of biscuits in a

box weigh 3 kg altogether.

What is the weight of one

packet in grams?

Show your work.

3kg = 3000g

3000 ÷ 10 = 300g each

30 bags of rice in a box

weigh 15 kg altogether. What

is the weight of one bag in

grams?

Show your work.

15kg = 15000g

15000 ÷ 30 = 500g each

Each peach weighs 200g.

How much do 8 peaches

weigh in kilograms?

Show your work.

200 x 8 = 1600g

1600 = 1.6kg

A tin of tuna weighs 250g.

What do 9 tins weigh in

kilograms?

Show your work.

250 x 9 = 2250g

2250g = 2.250kg

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 4 of 12

A. Use geometric terms to describe what is shown.

Parallel lines

Intersecting lines

Perpendicular lines

B. Classify each triangle by its sides and by its angles.

Equilateral triangle

Acute triangle

Scalene triangle

Right triangle

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 5 of 12

Name each quadrilateral.

Square

Trapezoid

Parallelogram

Rectangle

Rhombus

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 6 of 12

A. For each circle given, find the length of the diameter.

Show your calculation.

Circle with a radius of 24m 24 x 2 = 48m

Circle with a radius of 15cm 15 x 2 = 30cm

Circle with a radius of 30km 30 x 2 = 60km

Circle with a radius of 12mm 12 x 2 = 24mm

Circle with a radius of 45cm 45 x 2 = 90cm

B. For each circle given, find the length of the radius.

Show your calculation.

Circle with a diameter of 18cm 18 ÷ 2 = 9cm

Circle with a diameter of 22m 22 ÷ 2 = 11m

Circle with a diameter of 14mm 14 ÷ 2 = 7mm

Circle with a diameter of 30km 30 ÷ 2 = 15km

Circle with a diameter of 14m 14 ÷ 2 = 7m

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 7 of 12

A. Decide which is the correct angle from the two answers.

(150° or 30°)

(130° or 50°)

(110° or 90°)

B. Give the measure of each angle.

AÔE 60o

AÔB 20o

AÔJ 120o

AÔL 150o

ZÔH 90o

ZÔB 160o

ZÔK 50o

ZÔD 140o

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 8 of 12

Calculate the missing angles.

Show your calculation.

180 o – 136o = 44o

180 o – 60o = 120o

180 o – 48o = 132o

180 o – 95o = 85o

180 o – 35o = 145o

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 9 of 12

Work out the perimeter of each shape.

Show your calculation.

rectangle

sides 3cm, 9cm (3 x 2) + (9 x 2)

6 + 18 = 24cm

square

sides 5.4m 5.4 x 4 = 21.6m

regular hexagon

sides 9 cm 9 x 6 = 54cm

regular octagon

sides 8m 8 x 8 = 64cm

regular pentagon

sides 12m 12 x 5 = 60m

equilateral triangle

sides 38cm 38 x 3 = 114cm

rectangle

sides 9m, 15m (9 x 2) + (15 x 2)

18 + 30 = 48m

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 10 of 12

A. Work out the area of each shape.

Show your calculation.

rectangle

sides 4cm, 7cm 4 x 7 = 28cm2

rectangle

sides 8m, 12m 8 x 12 = 96m2

square

sides 9m 9 x 9 = 81m2

square

sides 5km 5 x 5 = 25km2

B. Complete the table below.

Length Width Area

5m 2m 10m2

15cm 9cm 135cm2

6m 6m 36m²

9cm 3cm 27cm²

8km 6km 48km²

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 11 of 12

Answer the following word problems. Label your

answer.

A photographer needs to mail 70

photographs to a newspaper in another

town. If she can put 10 photographs in

each envelope, how many envelopes will

the photographer need to use?

70 ÷ 10 = 7

envelopes

A hospital ordered 18 boxes of cotton

swabs. There were 10 cotton swabs in

each box. How many cotton swabs did

the hospital order in all?

18 x 10 = 180 cotton

swabs

The Summerfield bakery had 741 bags

of sugar. Then an employee used 50

bags of sugar to make some banana

pudding. How much sugar is left?

741 – 50 = 691 bags

of sugar

After a natural disaster, a clothing

company wanted to help. The company

donated 147 shirts and 242 pairs of

pants. How many pieces of clothing did

the company donate?

147 + 242 = 389

pieces of clothing

JKS SY 2012-13 Mathematics Revision_ Grade 4_ Q4 12 of 12

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Hala Dania Faris Hasan Yousef Fouad

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Students

Exercise Books

1. How many exercise books does Faris have?

14 exercise books

2. Who has 13 exercise books?

Yousef

3. How many exercise books do Dania and Hala have in all?

21 + 15 = 36 exercise books

4. How many more exercise books does Yousef have than

Fouad?

13 – 9 = 4 more exercise books