21 P5.ST.JC.18121197
Level 3
The average number of stickers that Adam and Bryan have is 30.
The average number of stickers that Bryan and Chris have is 50.
The average number of stickers that Chris and Adam have is 40.
  1. How many stickers does Adam have?
  2. How many stickers does Bryan have?
  3. How many stickers does Chris have?
3 m
Average with repeated identity Units & parts & boxes
22 P5.DA.JM.17083168
Level 1 PSLE
Find the average of the numbers 8, 0 and 28.
2 m
Average
23 P5.ST.JC.18121201
Level 2
The average cost of three books is $30.
Two of the books cost $10 and $20.
What is the cost of the 3rd book?
2 m
Averaging out Average with unknown quantity Units equations
24 P5.DA.JM.17083186
Level 1
In 8 years' time, the average age of Mr Tong and his son will be 27 years. What is their total age now?
2 m
Average
25 P5.ST.JC.18121202
Level 3
The average cost of some books is $75.
When another 3 books are added,
the total cost increases by $190.
The average cost becomes $70.
How many books are there in the end?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
26 P5.DA.JC.17100325
Level 1
Tom is 72 kg. Alice's mass is 79 of Tom's mass. What is their average mass?
2 m
Average F Multiplication Fraction of a whole Mass
27 P5.ST.JC.18121203
Level 3
The average cost of some books is $30.
When a book that costs $90 is added,
the average cost of the books becomes $40.
How many books are there in the end?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
28 P5.DA.JM.17083164
Level 1
What is the average of the first 5 odd numbers?
2 m
Average Odd & even
29 P5.ST.JC.18121204
Level 3
The average cost of some books is $30.
When a book that costs $90 is removed,
the average cost of the books becomes $10.
How many books are there in the end?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
30 P5.DA.JM.17083185
Level 1
There are 3 boxes. The mass of Box A is 3.4 kg, the mass of Box B is 5.8 kg and the mass of Box C is 4.2 kg. Which box has its mass nearest to the average mass of the 3 boxes? Give the letter only for the answer.
2 m
Average Mass
31 P5.ST.JC.18121205
Level 3
The average cost of some books is $30.
If 3 of the books are now each $15 more,
the average cost of the books becomes $35.
How many books are there altogether?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
32 P5.DA.JM.17083163
Level 2
The table shows the number of points Alfie scored in playing computer games. What is the average number of points he scored?
2 m
Table Average
33 P5.ST.JC.18121206
Level 3
The average cost of some books is $30.
If 3 of the books are now each $15 more and
2 of the books are now each $5 less,
the average cost of the books becomes $32.
How many books are there altogether?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
34 P5.DA.JM.17083167
Level 2
The average capacity of 3 containers is 35 ℓ. Given that the total capacity of two of the containers is 86 ℓ, what is the capacity of the third container?
2 m
Average Volume
35 P5.ST.JC.18121207
Level 3
The average cost of some books is $10.
After 2 new books are added,
it adds another $60 to the total cost.
As a result, the average cost of all the books increases to $20.
How many books are there at first?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
36 P5.ST.JC.18121208
Level 3
The average cost of some books is $30.
After 2 new books are added,
it adds another $10 to the total cost.
As a result, the average cost of all the books decreases to $20.
How many books are there at first?
3 m
2 averages Averaging out Average with unknown quantity Number x value Units equations Units table
37 P5.DA.NK.23052613
Level 2
The average score of Matthew, Lily and Ellie in the English quiz is 84. Lily's score is 6 above the average score while Ellie's score is 12 below the average score. How many marks does Matthew receive for the English quiz?
2 m
Average More than or less than
38 P5.ST.JC.18121209
Level 3
Adam's exam scores are as follows:
80 English
68 Chinese
8? Math
7? Science
Adam scored an average of 75 marks for the 4 subjects.
What is the greatest possible score for Math?
3 m
Average with min-max
39 P5.DA.JM.17083170
Level 2
Three containers contain an average of 48 ℓ of water. The 1st container contains 52 ℓ of water and the 2nd container contains 10 ℓ more water than the 1st container. How much water does the 3rd container contain?
2 m
Average Volume More than or less than
40 P5.DA.JM.17083171
Level 2
The mass of a box containing 8 durians is 28.9 kg. Given that the mass of the empty box is 1.7 kg, what is the average mass of the 8 durians?
2 m
Average D 4 operations Mass

5 per page

10 per page

20 per page

Symbols

x2
x3
₵
$
⊥
//
∠
°
π
%
:
\[ \]
STUDENT
Navigations
Contact Us
Members
Links