Level 2
Find the sum of all the odd numbers from 1 to 242.
2 m
Level 2
Find the sum of all the even numbers from 1 to 242.
2 m
Level 3 PSLE
Fong wanted to build a set of steps with 1-cm cubes. The figures show how he built the steps from a height of 2 cm to 3 cm to 4 cm. If Fong continued building the steps in this way, what would be the height of the set of steps that had 135 cubes? Express your answer in cm.
2 m
Level 3
The first 15 numbers of a number pattern are given.
  1. What is the 582nd number?
  2. What is the sum of the first 583 numbers?
3 m
Level 3
Based on the given number sums:
  1. If Row 2, (that is, 4 + 5 + 6 = 7 + 8) is said to have 5 numbers, and Row 3 has 7 numbers, how many numbers does Row 40 have?
  2. Which row has 155 numbers?
3 m
Level 3
By considering the given pattern, write down the number of squares in
  1. Pattern 5
  2. Pattern 30
  3. Pattern 300
3 m
Level 3
Each pattern is made up of squares. By considering the pattern, give the number of squares in
  1. Pattern 5
  2. Pattern 20
  3. Pattern 200
3 m
Level 3
The diagram shows the number of tables and the number of chairs around the tables.
  1. Find the number of chairs needed when there are 12 tables.
  2. Find the number of tables if there are 48 chairs
  3. Find the number of chairs needed for 100 tables.
3 m
Level 3
Using dots to form a series of inverted T-shaped patterns, the first three patterns are as shown. Find the number of dots needed to form the following patterns.
  1. Pattern 4
  2. Pattern 50
  3. Pattern 150
3 m
Level 3
The following is a sequence of structures made by joining identical cubes with 1-cm sticks as edges.
  1. How many sticks are needed to make structure 10?
  2. How many sticks are needed to make structure 100?
  3. A structure is made using 252 sticks. Which structure is it?
3 m