Addition of Decimal Numbers through Grid or Area Model

Q. Find the sum of 0.32 and 0.44 using decimal grid models.

1. 0.756
2. 0.76
3. 0.66
4. 0.84

Q.

A pole is of a certain length, 0.35 m of the pole is painted red, 1.37 m is painted white and 3.27 m is painted black. The remaining 5.63 m is left unpainted. Which of the following is the length of the pole if we round off to the nearest integer?

1. 10.52 m

2. 11 m

3. 12 m

4. 10 m

Q. Add using area model:
4.2 + 2.2