191,501 views
1 vote
1 vote
Use your calculator to work out

a) (1.8 × 10⁹) + (6.2 × 107)
b) (6.4 x 10-¹¹) - (5.3 × 10-¹2)
Give your answers in standard form.

User Karim Sinouh
by
2.8k points

2 Answers

26 votes
26 votes

Answer:

(a) (1.8×10^9)=1800000000

(6.2×107)=663.4

So therfore,

(1.8×10^9)+(6.2×107)=1800000663

Note: "^" means exponential (power)

Explanation:

(b) (6.4×10^-11)=0.000000000064

(5.3×10^-12)=0.0000000000053

Therefore ,

Answer= 0.0000000000587

User KJTHoward
by
2.5k points
24 votes
24 votes

Answer:

a) 1800000663.4

b) 0.0000000000587

Explanation:

User Arian Sharifian
by
3.1k points
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