Find the following values without a calculator.
Give your answers in this manner. (Eg 0.1, 0.2, 0.3)
- 2.7, 2.8, ____, 3
- 3.1, ____, 3.4, 3.55
- 6.6, 7, 7.4, _____
(a)
Common difference
= 2.8 - 2.7
= 0.1
Number
= 2.8 + 0.1
= 2.9
(b)
Common difference
= 3.55 - 3.4
= 0.15
Number
= 3.1 + 0.15
= 3.25
(c)
Common difference
= 7.4 - 7
= 0.4
Number
= 7.4 + 0.4
= 7.8
Answer(s): 2.9, 3.25, 7.8