Page 17 - Revised Maths Wisdom Class - 6

Patterns in Mathematics 15

3. Stacked Triangles

1 = 1 2 = 4 3 = 9 4 = 16
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Exercise 1A
Exercise 1A
1. Write the rule of the patterns and fill in the missing numbers in each of the following.

(a) 1, 2, 3, 5, 8, 13, , , Rule: ______________

(b) 30, 35, 33, 38, , , Rule: ______________

(c) 122, 120, 115, 113, 108, 106, , , Rule: ______________

(d) 4, 12, 36, 108, , , Rule: ______________

2. Fill in the blanks to complete the following patterns.

(a) 1 + 2 = 3 (b) 111 ÷ 3 = 37
1 + 2 + 3 = 6 222 ÷ 6 = 37

1 + 2 + 3 + 4 = 10 333 ÷ 9 = 37

1 + 2 + 3 + 4 + 5 = _____ 444 ÷ ___ = 37

1 + 2 + 3 + 4 + 5 + 6 = _____ 555 ÷ ___ = ___

1 + 2 + 3 + 4 + 5 + 6 + _____ = _____ ___ ÷ 18 = 37

: Hints: Last number × Consecutive number D
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3. Study the pattern and find the missing term.

(a) (b) (c)
16 10 1 4 3 2

8 2 5 2 2 3 9 5 4 7 5 3

18 ? 2 14 5 ? 13 6 4 9 ? 3

9 7 6 7 5 8