f1 maths! who can teach me ? (10 dim)

1. 1702 there are 4 significant figures
2. 0.034 there are 2 significant figures
3. 0.950 there are 3 significant figures

4. round off to
numbers 1significant figures 2significant figures 3significant figures
3056 3000 3100 3060
81.02 80 81 81.0
2.003 2 2.0 2.00
0.07498 0.07 0.075 0.0750

5.express the following numbers as the product of prime factors.

a. 144= 2 x 2 x 2 x 2 x 3 x 3
b. 2100= 2 x 2 x 3 x 5 x 5 x 7

6.find the H.C.F. and the L.C.M. of the following and answer in index notation

a. (2x2)x3x(7x7) and (2x2)x(3x3)x7
HCF = 2 x 2 x 3 x 7
LCM = 2 x 2 x 3 x 3 x 7 x 7
b.2x(5x5x5)x(7x7) and 5x(7x7)x(11x11)
HCF = 5 x 7 x 7
LCM = 2 x 5 x 5 x 5 x 7 x 7 x 11 x 11

1. 1702 there are 4 significant figures
2. 0.034 there are 2 significant figures
3. 0.950 there are 3 significant figures

4. round off to
numbers 1significant figures 2significant figures 3significant figures
3056 3000 3100 3060
81.02 80 81 81.0
2.003 2 2.0 2.00
0.07498 0.07 0.075 0.0750


5.express the following numbers as the product of prime factors.

a. 144= 2 x 2 x 2 x 2 x 3 x 3
b. 2100= 2 x 2 x 3 x 5 x 5 x 7



6.find the H.C.F. and the L.C.M. of the following and answer in index notation

a. (2x2)x3x(7x7) and (2x2)x(3x3)x7


HCF = 2 x 2 x 3 x 7

LCM = 2 x 2 x 3 x 3 x 7 x 7

b.2x(5x5x5)x(7x7) and 5x(7x7)x(11x11)


HCF = 5 x 7 x 7


LCM = 2 x 5 x 5 x 5 x 7 x 7 x 11 x 11