Find the following values without a calculator.
Give your answers in this manner. (Eg 0.1, 0.2, 0.3)
- 8.7, 8.8, ____, 9
- 8.7, ____, 9, 9.15
- 3.4, 3.8, 4.2, _____
(a)
Common difference
= 8.8 - 8.7
= 0.1
Number
= 8.8 + 0.1
= 8.9
(b)
Common difference
= 9.15 - 9
= 0.15
Number
= 8.7 + 0.15
= 8.85
(c)
Common difference
= 4.2 - 3.8
= 0.4
Number
= 4.2 + 0.4
= 4.6
Answer(s): 8.9, 8.85, 4.6