Find the following values without a calculator.
Give your answers in this manner. (Eg 0.1, 0.2, 0.3)
- 6.7, 6.8, ____, 7
- 6.1, ____, 6.4, 6.55
- 6.3, 6.7, 7.1, _____
(a)
Common difference
= 6.8 - 6.7
= 0.1
Number
= 6.8 + 0.1
= 6.9
(b)
Common difference
= 6.55 - 6.4
= 0.15
Number
= 6.1 + 0.15
= 6.25
(c)
Common difference
= 7.1 - 6.7
= 0.4
Number
= 7.1 + 0.4
= 7.5
Answer(s): 6.9, 6.25, 7.5