CHAPTER 2 STANDARD FORM (FORM 3 KSSM)

State the significant figure for each of the following:

i) 3435

ii) 0.0037

iii) 463.40

• i) 4 s.f , ii) 3 s.f , iii) 4 s.f

• i) 4 s.f , ii ) 2 s.f , iii) 5 s.f

• i) 4 s.f , ii) 2 s.f , iii) 4 s.f

Round off each of the following into 3 significant figures.

a) 2894

b) 0.05642

c) 0.8603

d) 96.87

(a)  

Calculate each of the following, Give your answer in 2 significant figures. "

(a) 23.6 - 81.9 ÷ 9

(b) 3.24 x 0.45 + 6.73

• (a) 25 b) 8.2

• (a) 16 b) 8.1

• (a) 15 b) 8.2

• (a) 15 b) 8.4

Choose which of the following is the correct standard form for this number.

(a) 0.2765

(b) 146.3

(c) 504 000

(d) 0.0906

Jawapan anda mungkin lebih daripada SATU.

• (a) 2.765 x 10^-1

• (b) 1.463 x 10³

• (c) 5.04 x 10⁵

• (d) 9.06 x 10^-2

Convert this number into ordinary number.

(a)3.7 x 10³

(b) 8.04 x 10^-4

(a)  

Convert 5150 km kepada m. Give your answer in standard form.

• 5.15 x 10⁵ m

• 5.15 x 10⁶ m

• 5.15 x 10⁷ m

• 5.15 x 10⁴ m

Solve this problem. Your answer in standard form.

(a) 6.2 x 10³ + 5.4 x 10³

(b) 3.95 x 10⁴ + 2.44 x 10⁵

• (a) 1.61 x 10³ , (b) 2.835 x 10⁴

• (a) 16.1 x 10³ , (b) 28.35 x 10⁴

• (a) 1.16 x 10⁴ , (b) 2.835 x 10⁵

• (a) 1.11 x 10⁴ , (b) 2.833 x 10⁵

Solve this. Choose your answer in standard form.

(a) 4.56 x 10^-2 - 2.08 x 10^-2

(b) 7.6 x 10^-3 - 8.5 x 10^-4

• (a) 2.48 x 10^-2 , (b) 6.75 x 10^-3

• (a) 2.84 x 10^-2 , (b) 6.57 x 10^-3

• (a) 2.48 x 10^-2 , (b) 67.5 x 10^-2

Solve. Choose the answer in standard form

(a) 6.1 x 10³ x 7 x 10⁴

(b) 4.85 x 10^-2 x 6.8 x 10^-7

• (a) 4.72 x 10^-8 , (b) 3.298 x 10^-8

• (a) 4.72 x 10⁸ , (b) 3.298 x 10⁸

• (a) 4.27 x 10⁸ , (b) 3.298 x 10^-8

Solve. Choose the best answer in standard form.

(a)  $\frac{6.3\ \times\ 10^4}{5\ \times\ 10^2}$  
(b)  $\frac{7.5\ \times10^{-5}}{3\ \times10^{-3}}$  

• (a)  $1.26\ \times10^2$ ,  (b)  $2.5\ \times\ 10^{-2}$  

• (a) 126 , (b) 0.025

• (a)  $12.6\ \times10^1$  , (b) 25