Question 1: Find the value

Add the following decimal numbers horizontally.

Question 2: Word Problem

The electricity consumption of a household in the first two weeks of last month was 45.7 units. The electricity consumption in the last two weeks was 50.3 units. What is the total electricity consumption during the last month?

Question 3: Vertical Summation

Add the same decimal numbers vertically. Notice how place values and decimal points are aligned in the same columns!

(i)
0.1
+0.3
(ii)
0.71
+0.23
(iii)
2.71
+5.16
(iv)
5.32
+1.83
(v)
2.70
+3.85
(vi)
1.8
+0.2
(vii)
18.35
+35.26
(viii)
1.28
+3.84
(ix)
3.88
+9.52
(x)
5.96
+4.04

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