Chapter 2 Form 3 Mathematics (Standard Form)

6.03

6.035

6.036

6.04

1. P = 7.25, n = -5

1. Р = 7.25, n = -4

1. P = 7.25, n = 4

1. P = 7.25, n = 5

• -2

-1

1

2

$$0.003=3\times10^{-2}$$

$$0.00000805=8.5\times10^{-6}$$

$$68500=6.85\times10^2$$

$$704000=7.04\times10^5$$

0.00279

0.2079

279

2790

$$6.67\times10^6$$

$$6.67\times10^5$$

$$1.09\times10^6$$

$$1.09\times10^7$$

$$1.23\times10^{-4}$$

$$1.25\times10^{-5}$$

$$8.2\times10^{-4}$$

$$8.2\times10^{-5}$$

$$1.34\times10^7$$

$$1.34\times10^2$$

$$1.34\times10^{-1}$$

$$1.34\times10^{-4}$$

$$3.4\times10^6$$

$$3.4\times10^5$$

$$3.4\times10^{-6}$$

$$3.4\times10^{-5}$$

43 841 = 439800 (3 s.f)

294.7 = 290 (2 s.f)

0.0186 = 0.02 (2 s.f)

19.165 = 19.17 (4 s.f)