Page 214 - New Medley 5 Semester 1

MATHS LAB ACTIVITY • Experiential Learning

Aim: To understand the multiplication of decimals

Materials: Tracing paper, chart paper, a pencil, sketch pens and a ruler

Method: Let us find the product of 0.3 × 0.7.

1. Take a chart paper and draw a square using a
ruler and a pencil.

2. Divide the square into 10 equal parts vertically.
Each division reflects or 0.1 of the square.

3. Shade three divisions to represent 0.3 as shown

in the adjoining figure.

4. Then, take a tracing paper and trace a square
0.3
same as the square on the chart paper.

5. Divide this square into 10 equal parts horizontally
and shade 7 divisions. These divisions show 0.7
0.7
of the square.

6. Now, cover the square drawn on the chart paper
with the square on tracing paper exactly.

7. Observe the number of total sub-squares you see
and count how many sub-squares have double

shade.

Observation: We observe that
0.21
Total number of sub-squares = 100

Number of sub-squares with double shade = 21

This means, or 0.21 of the square has double shade.

Conclusion: We conclude that 0.3 × 0.7 = 0.21

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