Skip to content / Đến nội dung
ThichHocToan.com

SASMO 2016 Primary 5 (Grade 5) Contest

Question 1

Find $1234+5432+789-134-232-819$.

Question illustration
  1. 6000
  2. 6600
  3. 7089
  4. 7455
  5. None of the above

Question 2

What is half of a quarter of a third of 96?

Question illustration
  1. 4
  2. 6
  3. 8
  4. 12
  5. None of the above

Question 3

How many 2-digit multiples of 3 are there?

Question illustration
  1. 30
  2. 31
  3. 32
  4. 33
  5. None of the above

Question 4

30 boys eat 2100 buns in 35 days. How many boys eat 660 buns in 11 days?

Question illustration
  1. 22
  2. 24
  3. 26
  4. 28
  5. 30

Question 5

Sixteen adventurers must cross a river in one boat holding at most 4 people. What is the least number of crossings needed?

Question illustration
  1. 4
  2. 5
  3. 6
  4. 7
  5. 9

Question 6

An old clock loses 5 minutes every hour. It is reset to the correct time at 9 am every morning. What time does it show whenever it is reset?

Question illustration
  1. 7 am
  2. 7:15 am
  3. 7:30 am
  4. 7:45 am
  5. 8 am

Question 7

Find the smallest number divisible by both 10 and 14.

Question illustration
  1. 140
  2. 110
  3. 90
  4. 70
  5. None of the above

Question 8

A group of 9 people visited a science centre. Adult tickets cost 10 dollars and child tickets cost 5 dollars. The group paid 70 dollars. How many children were there?

Question illustration
  1. 3
  2. 4
  3. 5
  4. 6
  5. 7

Question 9

An operator $m$ gives $17m29=23$, $19m11=15$, $31m7=19$. What is $13m23$?

Question illustration
  1. 11
  2. 7
  3. 18
  4. 19
  5. None of the above

Question 10

A large cube is formed by 64 small cubes and its surface is painted red. How many small cubes have exactly 2 faces painted?

Question illustration
  1. 8
  2. 12
  3. 20
  4. 24
  5. 32

Question 11

Luke and Desmond initially had the same number of sweets. Luke gave Desmond 8 sweets, then Desmond bought 5 more. Desmond's final number was twice Luke's initial number. How many did each have initially?

Question illustration
  1. 13
  2. 22
  3. 29
  4. 31
  5. 44

Question 12

Twenty-five trees are equally spaced along a road. The distance from the first to the eighth is 56 m. What is the distance from the first to the last?

Question illustration
  1. 175 m
  2. 168 m
  3. 192 m
  4. 200 m
  5. None of the above

Question 13

Find $P$ in $41,12,82,53,24,94,65,36,P$.

Question illustration
  1. 106
  2. 7
  3. 67
  4. 74
  5. None of the above

Question 14

$P$ is a whole number. Find $P$ if $\frac{P+1}{P\times P-1}=\frac1{10}$.

Question illustration
  1. 5
  2. 7
  3. 9
  4. 11
  5. None of the above

Question 15

Which of the shown cubes cannot be formed by folding the net on the right?

Question illustration
  1. Cube A
  2. Cube B
  3. Cube C
  4. Cube D
  5. None of the above

Question 16

In the figure, find the ratio of the shaded area to the unshaded area.

Question illustration

Question 17

Four cards each have a mathematical symbol on one side and a number on the other. The two arrangements shown result from flipping and rearranging the same cards. How many cards have an even number on one side?

Question illustration

Question 18

The bar chart shows cars sold in Town A in the first half of 2015. Horizontal lines are equally spaced. The difference between the highest and lowest monthly sales is 60. How many cars were sold in all six months?

Question illustration

Question 19

When 70 is divided by $x$, the remainder is 2. When 121 is divided by $x$, the remainder is also 2. Find $x$.

Question illustration

Question 20

The shown figure consists of 4 identical squares, each with side 3 cm. Copies of the figure are placed together to form a larger square. What is the least possible perimeter of the larger square?

Question illustration