 Which one of the following fractions is the largest? Give the answer in letter. (Eg a)
(a) 13
(b) 25
(c) 49
1 m
Four children made the following statements. Winnie : The average of Yoko's mass and my mass is 39 kg. Xtra : I am the heaviest. Yoko : Zane is 2 kg lighter than Xtra. Zane : Our masses are in consecutive order (In running sequence). What is the total mass of Winnie, Xtra and Yoko ?
3 m
The average points accumulated by 6 children is 91.5. They have all attained different points which are whole numbers. The lowest point is 70 while the highest point is 100.
1. Find the average points achieved by the 4 children whose marks lie between the highest and the lowest.
2. Find the smallest possible second lowest mark among these 6 children.
3. Find the largest possible second lowest mark among these 6 children.
5 m
PSLE
A total of 130 people stand in a queue for movie tickets. There are at least 3 adults between any 2 children. What is the largest possible number of children in the queue?
2 m
What is the maximum number of cubes of edge 6 cm that can be cut from a foam cuboid, 67 cm by 36 cm by 27 cm?
2 m
Find the maximum number of cubes of edge 3 cm that can be cut from a foam cuboid, 27 cm by 24 cm by 18 cm?
2 m
Kelvin bought some chocolate came in square pyramid packages as shown in the figure. Each pyramid had a square base area of 1 cm2 and a vertical height of 1 cm. He then packed the candies in a box measuring 6 cm by 4 cm by 7 cm. What was the maximum number of such candies he could pack into the box? 2 m
What is the maximum number of 3 cm cubes that can be filled into a 12 cm by 9 cm by 7 cm cuboid? 2 m
The solid is made up of 3-cm cubes. What is the volume of the minimum number of cubes that must be added to form a bigger cube? 2 m
Andrew wants to make a square with rectangular tiles each measuring 8 cm by 6 cm. How many such rectangular tiles must he use to make the smallest possible square? 2 m