
Exercise 2f Natural Numbers
Authored by pretty nee
Mathematics
1st Grade

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13 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
James wants to cover a floor measuring 90cm by 120cm with square tiles of the same size. Given that he uses only whole tiles, find:
a. the largest possible length of the side of each tile,
b. The number of tiles that are needed to cover the floor.
a. 20cm
b. 15
a. 30cm
b. 12
a. 32cm
b. 15
a. 38cm
b. 10
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Two lighthouses flash their lights every 20 seconds and 30 seconds respectively. Given that they flash together at 3pm, when will they next flash together?
3.01pm
3.05pm
3.11pm
3.15pm
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Three cyclists A, B and C cycled at a steady ride round a track in 12 min, 18 min and 24 min respectively. If they started together at 10 a.m. at the same point on the track in the same direction, at what time they meet again at the starting point?
3.45pm
10.15am
11.12am
12.12pm
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A teacher distributes 255 pencils, 425 sheets of graph paper and 595 sheets of writing paper equally to a group of students.
Calculate the largest possible number of students in the group.
85
90
75
70
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
A packet of sweets can be distributed evenly to 15 persons, 20 persons or 25 persons, find the least number of sweets in the packet.
320
200
250
300
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the least length of string which can be cut into equal portions each of 4 em, or into equal portions each of 8 cm, or into equal portions each of 6 cm, without any remainder string?
32cm
24cm
25cm
30cm
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the greatest number that divides 84, 108 and 192 without any remainder.
12
24
25
28
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