PROJECT – NAPIER’S ROD
Topic:
Napier's Rods for Multiplication.
Objective:
To construct and demonstrate the use of a set Napier's rods
Materials Required:
Chart paper, geometry box, sketch pens of, a pair of scissors., fevicol, etc.
Procedure
Step 1: Make all the strips shown in Fig. 1 on chart paper and cut. These strips are called Napier's Rods.
(A) To multiply a 2-digit number by a single-digit.
Example: 36 x 5
PROJECT – NAPIER’S ROD
Step 2.:
To multiply 36 x 5, keep the 3-strip and 6-strip
next to the x-strip as shown in Fig.
To find the product, add the numbers diagonally.
Hence, 36 x 5 = 180.
PROJECT – NAPIER’S ROD
(B) To multiply a 3 -digit number by a single-digit.
Example : 539 X 8.
Step 3 To multiply 539 x 8, Keep 5-strip, 3-strip and 9-strip next to X-strip as shown in Fig
Add the numbers diagonally to get the product.
Hence, 539 x 8 = 4312
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