81 P6.AG.JC.17080463
Level 3
A plate cost $b. A bowl cost $20 less than the plate.
  1. Mother bought 2 plates and 1 bowl. How much did Mother pay in terms of b?
  2. If b = 98, find the total amount that Mother paid.
3 m
Algebra in 1 variable Algebra simplifying Algebra substitution Money More than or less than
82 P6.AG.JC.22050602
Level 3 PSLE
The table shows the number of glass bottles collected by 3 boys.
  1. Find the total number of glass bottles Abe, Bob and Tim collected. Express the answer in terms of m in the simplest form.
  2. If m = 9, find the average number of glass bottles the 3 boys collected.
3 m
Algebra in 1 variable Algebra simplifying Algebra substitution Average
83 P3.WN.JM.17110341
Level 2
3ab + bb3 = 535
2 m
W Addition & subtraction Units & parts Substitution
84 P6.AG.NK.21061107
Level 3 PSLE
The perimeter of figure ABCDE is (10w + 14) cm. The perimeter of square ABCD is 20 cm.
  1. Find the perimeter of triangle ADE in terms of w.
  2. The perimeter of figure ABCDE is 44 cm. What is the value of w?
3 m
Algebra in 1 variable Algebra substitution Area perimeter Square Triangle
85 P3.WN.JM.17110344
Level 2
Find the missing digits.
1 A B + C B 5 = 5 B 8
(a) A
(b) B
(c) C

2 m
W Addition & subtraction Units & parts & boxes Substitution
86 P6.AG.JC.17080440
Level 3
Some oil is leaking from a crack of a container. After z minutes, the volume of the oil left in the container is given as Volume = 40(100 - 5z) cm3. How much oil will be left in the tank after 10 minutes? Give your answer in litres.
3 m
Algebra in 1 variable Algebra substitution Volume Unit conversion
87 P6.AG.JC.23030112
Level 3 PSLE
The figure is made up of two rectangles, ABHF and FGDE, and two right-angled isosceles triangles, BCH and DCG. BA = 13 cm, DE = 8 cm and BH = w cm. AFE and CHGF are straight lines.
  1. Find the length of AE in terms of w. Give your answer in the simplest form.
  2. Find the total area of the figure when w = 16.
3 m
Algebra in 1 variable Algebra substitution Length Area perimeter Rectangle Isosceles triangle
88 P6.AG.JC.17080459
Level 3
Mrs Jensen paid a total of $38 for 3n pens and 4 markers. Each pen cost $2.
  1. Express the cost of 1 marker in terms of n.
  2. If n = 4, how much did each marker cost?
3 m
Algebra in 1 variable Algebra simplifying Algebra substitution Algebra fractions Money
89 P5.RD.NK.23021727
Level
In a stationery kiosk, a box of markers costs thrice as much as a guidebook. Mrs Yong spent 14 of her money to buy 2 boxes of markers. She then spent 47 of her remaining money to buy some guidebooks and had $21.60 left. How much does each guidebook cost?
4 m
F Addition & subtraction Fraction to units Money Times as many Remainder concept Working backwards Units & parts Substitution
90 P5.ST.JC.18121168
Level 3
Adam has some blue stickers and red stickers.
If Adam receives another 60 blue stickers,
the blue stickers will be 80% as many as the red stickers.
If Adam receives another 300 red stickers,
the blue stickers will be 20% as many as the red stickers.
  1. How many blue stickers are there?
  2. How many red stickers are there?
4 m
Percent to units Unchanged quantity Double if Units table Units & parts Substitution

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