Question

Mark (✓) against the correct answer
What should be added to 3.07 to get 3.5?

(a) .57
(b) .34
(c) .43
(d) .02

Answer 1

(c) .43
We have:
3.07 + x = 3.5
⇒ x = 3.5 − 3.07
Converting the given decimals into like decimals, we get:
3.07 and 3.50
Writing them in column form with the larger one at the top and subtracting, we get:

∴ x = 0.43

Hence, 0.43 should be added to 3.07 to get 3.5.