The standard form for 0.000064 is
(a) 64 × 10⁴
(b) 64 × 10^-4
(c) 6.4 × 10⁵
(d) 6.4 × 10^-5

Solution:

The correct option is (d)

The standard form for 0.000064

0.000064 = (0.000064 × 10⁵)/ 10⁵

= (6.4)/10⁵

= 6.4 × 10^-5

Example:

(i) The standard form of 0.00736567 = 7.36567 × 10^-3

(ii) The standard form of 0.0001 = 1 x 10^-4

✦ Try This: The standard form for 0.0000086 is (a) 8.6 × 106, (b) 8.6 × 10^-6, (c) 8⁶ × 10⁵, (d) 8⁶ × 10^-5

The correct option is (b)

The standard form for 0.0000086

0.0000086 = (0.0000086 × 10⁶)/ 10⁶

= (8.6)/10⁶ = 8.6 × 10^-6

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 12

NCERT Exemplar Class 8 Maths Chapter 8 Problem 24

The standard form for 0.000064 is (a) 64 × 10⁴, (b) 64 × 10^-4, (c) 6.4 × 10⁵, (d) 6.4 × 10^-5

Summary:

The standard form for 0.000064 is 6.4 × 10^-5

☛ Related Questions:

• The standard form for 234000000 is (a) 2.34 × 108, (b) 0.234 × 109, (c) 2.34 × 10-8, (d) 0.234×10-9
• The usual form for 2.03 × 10-5 (a) 0.203, (b) 0.00203, (c) 203000, (d) 0.0000203
• (1/10)0 is equal to (a) 0, (b) 1, (c) 1/10, (d) 10