Class 07 To use a 10 x 10 grid as a model for solving various types of per cent problems

 ACTIVITY – Percent Problems

Objective: 

To use a 10 x 10 grid as a model for solving various types of per cent problems.

Materials Required: 

Sketch pens, squared paper, colour pencils, geometry box, etc.

Procedure:

1. To represent the actual per cent.

1. Draw a 10 x 10 grid on a squared paper as shown in Fig. 

In the figure, one whole square represents 100 per cent and one small square represents 1 per cent. 

2. In the bottom of the big square, shade 30 small squares horizontally as shown in fig to depict 30 %

2. In the bottom of the big square, shade 30 small squares horizontally as shown in fig to depict 30 %

II. To represent the less than 1 %.

To show less than 1 per cent mark as shown in Fig. 3.

III. To represent more than 100%.

1. Make two grids of 10 x 10 each on squared papers.

2. To represent 150%, we shade one grid in full and the other 5 rows ( or 50 small squares) as shown in Fig.

100% + 50 % = 150%