Question 1

Write 6,000,000,000 in standard form

Accepted Answer

$6 	imes 10^9$

Answer

$6 	imes 10^{10}$

Answer

$0.6 	imes 10^9$

Answer

$0.6 	imes 10^{11}$

Question 2

Write 6,300,000,000 in standard form

Accepted Answer

$6.3 	imes 10^9$

Answer

$0.63 	imes 10^9$

Answer

$6.3 	imes 10^8$

Answer

$6.3 	imes 10^{10}$

Question 3

Write 5,020,000 in standard form

Accepted Answer

$5.02 	imes 10^6$

Answer

$5.02 	imes 10^5$

Answer

$0.502 	imes 10^7$

Answer

$5.02 	imes 10^7$

Question 4

Write $6 	imes 10^7$ as a normal number

Accepted Answer

60000000

Answer

60000000000

Answer

6000000

Answer

600000000

Question 5

Write $6.03 	imes 10^7$ as a normal number

Accepted Answer

60300000

Answer

603000000

Answer

60300

Answer

603000

Question 6

Write $5.1 	imes 10^5$ as a normal number

Accepted Answer

510000

Answer

5100000

Answer

51000

Answer

5100

Question 7

Write 0.0000006 in standard form

Accepted Answer

$6 	imes 10^{-7}$

Answer

$6 	imes 10{^-5}$

Answer

$6 	imes 10^{-6}$

Answer

$6 	imes 10^7$

Question 8

Write 0.00000063 in standard form

Accepted Answer

$6.3 	imes 10^{-7}$

Answer

$6.3 	imes 10^{-6}$

Answer

$6.3 	imes10^7$

Answer

$0.63 	imes 10^{-8}$

Question 9

Write 0.00305 in standard form

Accepted Answer

3.05 x 10$^{-3}$

Answer

3.05 x 10$^{-4}$

Answer

0.305 x 10$^3$

Answer

0.305 x 10$^{-2}$

Question 10

Write $6 	imes 10^{-7}$ as a normal number

Accepted Answer

0.0000006

Answer

0.00000006

Answer

0.006

Answer

0.00006

Question 11

Write $6.03 	imes 10^{-7}$ as a normal number

Accepted Answer

0.000000603

Answer

0.00000603

Answer

0.0000603

Answer

0.0000000603

Question 12

Write $5.1 	imes 10^{-5}$ as a normal number

Accepted Answer

0.000051

Answer

0.0000051

Answer

0.00000051

Answer

0.00051

Question 13

$(4 	imes 10^6) 	imes (2 	imes10^3)$

Accepted Answer

$8 	imes 10^9$

Answer

$8 	imes10^{-9}$

Answer

$6 	imes 10^{18}$

Answer

$8 	imes 10^{18}$

Question 14

$(3 	imes 10^6) 	imes (2 	imes 10^{-2})$

Accepted Answer

$6 	imes 10^4$

Answer

$5 	imes 10^{-12}$

Answer

$6 	imes 10^8$

Answer

$6 	imes 10^{-12}$

Question 15

$(4 	imes 10^6) 	imes (3 	imes 10^3)$

Accepted Answer

$1.2 	imes 10^{10}$

Answer

$1.2 	imes 10^7$

Answer

$1.2 	imes 10^9$

Answer

$7 	imes 10^10$

Question 16

$(5 	imes 10^6) 	imes (7 	imes 10^3)$

Accepted Answer

$3.5 	imes 10^{10}$

Answer

$1.2 	imes 10^9$

Answer

$1.2 	imes 10^{18}$

Answer

$1.2 	imes 10^9$

Question 17

$(4 	imes 10^6) \div (2 	imes 10^3)$

Accepted Answer

$2 	imes 10^3$

Answer

$8 	imes 10^9$

Answer

$8 	imes 10^{-3}$

Answer

$2 	imes 10^{-3}$

Question 18

$(4.8 	imes 10^6) \div (1.2 	imes 10^3)$

Accepted Answer

$4 	imes 10^3$

Answer

$6 	imes 10^3$

Answer

$4 	imes 10^2$

Answer

$6 	imes 10^9$

Question 19

$(1 	imes 10^6) \div (2 	imes10^3)$

Accepted Answer

$5 	imes 10^2$

Answer

$5 	imes10^{-1}$

Answer

$0.5 	imes 10^{-2}$

Answer

$0.5 	imes 10^2$

Question 20

$(1 	imes 10^7) \div (4 	imes 10^5)$

Accepted Answer

$2.5 	imes 10^1$

Answer

$5 	imes 10^1$

Answer

$1.5 	imes 10^1$

Answer

$2.5 	imes 10^4$

Question 21

$y^2 = ab \div (a + b)$
$a = 4.3 	imes 10^6$, $b = 6.03 	imes 10^{-3}$
Find $y$. Give your answer in standard form correct to 2 significant figures.

Accepted Answer

$7.8 	imes 10^{-2}$

Answer

$7.8 	imes 10^{-3}$

Answer

$0.078 	imes 10^{-2}$

Answer

$7.77 	imes 10^{-2}$

Question 22

Write the number 0.00037 in standard form

Accepted Answer

$3.7 	imes 10^{-4}$

Answer

$3.7 	imes 10^{-5}$

Answer

$3.7 	imes 10^{-3}$

Answer

$0.37 	imes 10^{-3}$

Question 23

Write $8.25 	imes 10^3$ as an ordinary number

Accepted Answer

8,250

Answer

825,000

Answer

825

Answer

825,00

Question 24

Work out $(2.1 	imes 10^8) 	imes (6 	imes 10^{-5})$

Accepted Answer

$1.26 	imes 10^4$

Answer

$1.26 	imes 10^{13}$

Answer

$1.26 	imes 10^3$

Answer

$12.6 	imes 10^3$

Question 25

Write $6.43 	imes 10^5$ as an ordinary number

Accepted Answer

643000

Answer

6430000

Answer

6430

Answer

64300

Question 26

Work out the value of $2 	imes 10^7 	imes 8 	imes 10^{-12}$. Give your answer in standard form.

Accepted Answer

$1.6 	imes 10^{-4}$

Answer

$16 	imes 10^{-5}$

Answer

$1.6 	imes 10^{-20}$

Answer

$16 	imes 10^{-5}$

Question 27

Write down the value of $10^0$

Accepted Answer

1

Answer

0

Answer

10

Answer

1/2

Question 28

Write $6.7 	imes 10^{-5}$ as an ordinary number

Accepted Answer

0.000067

Answer

0.0000067

Answer

0.00067

Answer

0.0067

Question 29

Work out the value of $(3 	imes 10^7) 	imes (9 	imes 10^6).$ Give your answer in standard form.

Accepted Answer

$2.7 	imes 10^{14}$

Answer

$2.7 	imes 10^4$

Answer

$27 	imes 10^{13}$

Answer

$2.7 	imes 10^{13}$

Question 30

Write $8.2 	imes 10^5$ as an ordinary number

Accepted Answer

820000

Answer

82000000

Answer

8200000

Answer

82000

Question 31

Write 0.000376 in standard form

Accepted Answer

$3.76 	imes 10^{-4}$

Answer

$0.36 	imes 10^4$

Answer

$3.76 	imes 10^4$

Answer

$3.7 	imes 10^{-4}$

Question 32

Work out the value of $(2.3 	imes 10^{12}) \div (4.6 	imes 10^3).$ Give your answer in standard form

Accepted Answer

$5 	imes 10^8$

Answer

$0.5 	imes 10^9$

Answer

$5 	imes 10^9$

Answer

$2.3 	imes 10^{-9}$

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