Page 68 - Start Up Mathematics_8 (Non CCE)

Example 22: Find the square root of 159.7696.
Solution:
12.64

1 1 59.76 96
1
22 59
44
246 1576
1476
2524 10096
10096
0

\ 159.7696 = 12.64
Example 23: Find the square root of 0.00009025.
Solution:

0.0095 Alternate Method
0. 0.00 00 90 25 9,025 9,025 95
0 0.00009025 = 10,00,00,000 = 10,00,00,000
00 9 90 25
00 \ 9,025 = 95 81
00 10,00,00,000 = 10,000 10,000¥ 185 925
00 925
9 90 = 10,000
81 9,025 95 0
185 925 So, 10,00,00,000 = 10,000 = 0.0095
925
0

\ 0.00009025 = 0.0095
0.002025 + 0.001369 .
Example 24: Find the square root of 2,025 and 1,369. Use these to find the value of
0.002025 – 0.001369
Solution: First find square root of 2,025 and 1,369 by the long division method.
45 37

4 20 25 3 13 69
16 9
85 425 67 469
425 469
0 0

2,025 = 45 1,369 = 37

2,025 2,025 45
0.002025 = = = = 0.045
10,00,000 1,000 1,000 1,000
¥
60