Patterns — Chapter Test | Class 1 IMO

Q1

Continue: ● ● ▲ ● ● ▲ ___ ?

Unit is ●●▲; after ▲ it starts again with ●.

Q2

Continue: A B A B A ___ ?

The pattern alternates A, B; after A comes B.

Q3

Which shape is the odd one in the pattern: ■ ■ ● ■ ■ ?

● breaks the row of squares.

Q4

Continue: 5, 10, 15, 20, ___ ?

Add 5 each time: 20 + 5 = 25.

Q5

Continue: 2, 4, 6, 8, ___ ?

Add 2 each time: 8 + 2 = 10.

Q6

What is the rule for 10, 20, 30, 40?

Each is 10 more than the last.

Q7

Find the missing number: 1, 2, __, 4, 5

Counting by 1, the missing number is 3.

Q8

Continue: ↑ → ↑ → ↑ ___ ?

The pattern alternates ↑ →; after ↑ comes →.

Q9

Beads pattern for a rakhi: red, gold, red, gold, ___ ?

Unit is red-gold; after gold comes red.

Q10

Steps on a staircase go 1, 2, 3, 4 … How many steps after the 6th step is the 8th step?

8 − 6 = 2 steps later.

Q11

Find the missing number: 2, 4, __, 8, 10

Skip counting by 2: the missing number is 6.

Q12

A pattern grows: 1, 2, 4, 7, 11 … each step adds one more than before (+1, +2, +3, +4). What comes next?

Next add 5: 11 + 5 = 16.