Mathematics 2 Upper Primary Quizzes

 

MATHEMATICS QUIZZES 

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#1. If 2x + 8 = 26. What is x?

2x 8 = 26

2x = 26 – 8

2x = 18

x = 18/2

x = 9

#2. Find the value of x, if 2x + x = 90°.

2x x = 90°

3x = 90°

x = 90º/3

x = 30º

#3. What is 58 in Roman numerals?

58 = 50 † 5 † 3

= L † V † III

= LVIII

#4. Covert 0.8 tonne to kg.

1 tonne = 1,000 kg

1 x 0.8 t = 1,000 x 0.8 kg

0.8 t = 1,000 x 8/10 kg

0.8 t = 100 x 8 kg

0.8 t = 800 kg

 

#5. The average of a journey of 1,440 km was 80 km/h. How long did the journey take?

The journey will take

= 1,440 km/80 km/h

= 18 hours 

#6. Calculate the area of a semi circle whose diameter is 14 cm. (take π = 22/7)

A = πr²

Where r = 14/2 = 7 cm and π = 22/7

A = 22/7 x 7 x 7

A = 22 x 7

A = 154 cm²

 

Area of semi circle is

= 154/2

= 77 cm²

#7. Ade, Ayo and Ojo received ₦369 to share in the ratio 5:4:3 respectively. How much did Ade received?

Ade received N369 x 5/11

= 1,980/12

= N165 

#8. If Anthony is 0.67 m shorter than Michael who is 1.81 m tall. How tall is Anthony?

The sum of 0.67 m and 1.81 m is the height of Anthony.

= 0.67 m † 1.81 m

= 2.48 m

#9. If a Local government in Lagos State charge ₦400 monthly for each house as tenement rate. Find the total amount collected on 110 houses in one month.

Monthly charges is 400 naira,

Monthly charges for 110 houses is

= 110 x 400 naira

= 44 000 naira 

#10. What is the percentage of gain or loss if fruits bought for ₦500 is sold for ₦700.

CP = N500, SP = N700

P = SP – CP

P = N700 – 500

P = N200

%P = (N200 x 100)/N500

%P = N20000/N500

%P – 200/5

%P = 40%

#11. Find the difference between 7 1/5 and 4 2/3.

7 1/5 † 4 2/3

= 3 (3 – 10)/15

= 2 (15 † 3 – 10)/15

= 2 (8)/15

= 2 8/15

#12. The ages of some teachers in a school are 30 years, 60 years, 46 years, 29 years, 50 years, 30 years and 40 years. Find the mean age.

Mean = (30 † 60 † 46 † 29 † 50 † 30 † 40)/8

= 320/8

= 40

#13. Find the sum of the values of 7 in the numbers 479 and 729?

Value of 7 in 479 is 70 while in 729 is 700

The sum of values of 7s

= 70 † 700

= 770

#14. Write in figure: Fifty five thousand and sixteen.

Fifty five thousand and sixteen is 

= 55 000 † 16

= 55 016

#15. In a class of 50 pupils, 28 of them are girls, what is the percentage of boys?

Number of boys is

= 50 – 28

= 22

% of boys is

= 22 x 100/50

= 44%

 

#16. A job takes 30 men for 15 days to complete. How many men working at the same rate are needed to complete the job in 10 days.

The number of men to complete the work in 10 days at the same rate is

= (30 x 15)/10

= 450/10

= 45 men 

#17. If x = 5, y = 4, z = 2. Find the value of (x + y + Z)².

(x † y † Z)²

= (5 † 4 † 2)²

= (11)²

= 11 x 11

= 121

#18. The average of three numbers is 16. Two of the numbers are 20 and 24. What is the third number?

The third number is 

(20 24 x)/3 = 16, 

If x is the third number. 

20 24 x = 16 x 3

44 x = 48

x = 48 – 44

x = 4

#19. A miner picked up gold of the following sizes 0.3g, 0.28g, 0.19g, 0.32 and 0.25g. Arrange these weights in order of sizes beginning with the smaller.

0.3 – 0.300 – 300 4th

0.28 – 0.280 – 280 3rd 

0.19 – 0.190 – 190 1st 

0.32 – 0.320 – 330 5th 

0.25 – 0.250 – 250 2nd

Therefore, 0.19, 0.25, 0.28, 0.3 and 0.32

#20. Find the circumference of a circle with radius 3 1/3 cm. (Take π = 22/7)

C = 2πr
C = 2 x 22/7 x 7/2 (where 3 1/2 = 7/2)
C = 22 cm
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