Find the following values without a calculator.
Give your answers in this manner. (Eg 0.1, 0.2, 0.3)
- 8.6, 8.7, ____, 8.9
- 3.6, ____, 3.9, 4.05
- 7.9, 8.3, 8.7, _____
(a)
Common difference
= 8.7 - 8.6
= 0.1
Number
= 8.7 + 0.1
= 8.8
(b)
Common difference
= 4.05 - 3.9
= 0.15
Number
= 3.6 + 0.15
= 3.75
(c)
Common difference
= 8.7 - 8.3
= 0.4
Number
= 8.7 + 0.4
= 9.1
Answer(s): 8.8, 3.75, 9.1