Solution:

324000000

= 324 × 106

= 3.24 × 102× 106

= 3.24 × 102+6

= 3.24 × 108

Solution:

45000000

= 45×106

= 4.5×101×106

= 4.5×101+6

= 4.5×107

Solution:

45

= 4.5×10

= 4.5×101

Solution:

101000

=1.01×100000

=1.01×105

Solution:

0.00671

= $$\frac{6.71}{100000}$$

= $$\frac{6.71×100}{10^5}$$

= 6.71×102-5

=6.71×10-3

Solution:

0.0000435

= $$\frac{0.0000435×10000000}{10000000}$$

= $$\frac{435}{10^7}$$

Solution:

0.0000435

= $$\frac{0.0000435×10000000}{10000000}$$

= $$\frac{435}{10^7}$$

Solution:

= 2.4×105

= 240000

Solution:

= 3.2×104+2.3×104

= (3.2+2.3)×104

= 5.5×104

Solution:

299792458

= 2.99792458 × 100000000

= 2.99792458 × 108 m/s

Solution:

3.2 × 104 + 2.3 × 104

= ( 3.2 + 2.3 )× 104

= 5.5× 104

Solution:

5.7× 101×-4-1

= 57× 10-4-1

= 57× 10-5

= $$\frac{57}{10^5}$$

= $$\frac{57}{100000}$$

= 0.00057

Solution:

2.6×1000 + 3.4×100

=2600 +340

= 2940

= 294×101

= 2.94×102×101

= 2.94× 103

Solution:

8.3×100 - 2.4×100

= 830-240

= 590

= 59×101

= 5.9×102

Solution:

72,000,000,000,000,000,000,000 kg.

= 72 × 1018kg

= 7.2×101×1018 kg

= 7.2×1019 kg

Solution:

9.70 × 106 + 8.3× 105

= 9.70× 106 + 0.83× 106

= (9.70 + 0.83)× 106

= 10.53×106

= $$\frac{10.53}{10}$$× 10× 106

= 1.053×101+6

= 1.053×107

Solution:

1.2× 105

= $$\frac{1.2}{10}$$ × 10× 105

= 0.12× 106

Now,

( 1.2× 105) + (5.35× 106 )

= ( 0.12× 106) + (5.35× 106)

= (0.12 + 5.35)× 106

= 5.47× 106

Solution:

7.00× 10-6

= $$\frac{7.00}{10}$$× 101×10-6

= 0.70× 101-6

= 0.70× 10-5

Now,

8.41× 10-5 - 0.70× 10-5

= 8.41× 10-5 - 0.70× 10-5

= (8.41 - 0.70)× 10-5

= 7.71× 10-5

Solution:

$$\frac{1.20× 10^{-8}}{3.0×10^{-3}}$$

= $$\frac{1.20}{3}$$$$\times$$10-8 + 3

= 0.40$$\times$$10-5

= $$\frac{40}{100}$$$$\times$$ 10-5

= $$\frac {4.0 \times 10^1 \times 10^{-5}}{10^2}$$

=$$\frac{4.0\times10^{1-5}}{10^2}$$

= 4.0 $$\times$$10-4-2

= 4.0$$\times$$10-6

Solution:

2.4× 10-3

= $$\frac{2.4}{10}$$× 10× 10-3 = 0.24× 10-2

Now,

6.91× 10-2 + 0.24× 10-3

= 6.91× 10-2 + 0.24× 10-2

=(6.91 + 0.24 )× 10-2

= 7.15× 10-2

Solution:

4.9 $$\times$$104

= $$\frac{4.9}{10}$$$$\times$$101$$\times$$104

= 0.49 $$\times$$101+4

= 0.49$$\times$$105

Now,

1.33$$\times$$105 - 4.9 $$\times$$104

= 1.33 $$\times$$105 - 0.49$$\times$$105

= (1.33 - 0.49) $$\times$$105

= 0.84 $$\times$$105

= $$\frac{8.4}{10}$$$$\times$$105

= 8.4$$\times$$104