Study the table carefully.
- How many insects are there in Week 5?
- How many insects are there in Week 11?
- If there are 729 insects, how many weeks have passed?
(a)
Pattern for the number of insects
Week 1: 1 x 1 x 1 = 1
Week 2: 2 x 2 x 2 = 8
Week 3: 3 x 3 x 3 = 27
Week 4: 4 x 4 x 4 = 64
Formula:
Number of insects = Week number x Week number x Week number
Number of insects in Week 5
= 5 x 5 x 5
= 125
(b)
Number of insects in Week 11
= 11 x 11 x 11
= 1331
(c)
729 = 9 x 9 x 9
Number of weeks = 9
Answer(s): (a) 125; (b) 1331; (c) 9
