igureMaths
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Calculating in standard form
20 questions
Lesson
Not started
Mark as done
Work out
(
4
×
10
5
)
×
(
5
×
10
3
)
(4 \times 10^5) \times (5 \times 10^3)
(
4
×
1
0
5
)
×
(
5
×
1
0
3
)
. Give your answer in standard form.
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Level 2
2 marks
Start
→
Mark as done
(a)
Work out
(
3
×
10
4
)
×
(
5
×
10
−
2
)
(3 \times 10^4) \times (5 \times 10^{-2})
(
3
×
1
0
4
)
×
(
5
×
1
0
−
2
)
Give your answer in standard form. (2 marks)
(b)
Work out
(
8
×
10
5
)
÷
(
2
×
10
2
)
(8 \times 10^5) \div (2 \times 10^2)
(
8
×
1
0
5
)
÷
(
2
×
1
0
2
)
Give your answer in standard form. (1 mark)
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Level 2
3 marks
Start
→
Mark as done
(a)
Work out
(
2.4
×
10
6
)
×
(
3
×
10
−
2
)
(2.4 \times 10^6) \times (3 \times 10^{-2})
(
2.4
×
1
0
6
)
×
(
3
×
1
0
−
2
)
. Give your answer in standard form. [2]
(b)
Work out
(
9
×
10
8
)
÷
(
1.5
×
10
3
)
(9 \times 10^8) \div (1.5 \times 10^3)
(
9
×
1
0
8
)
÷
(
1.5
×
1
0
3
)
. Give your answer in standard form. [2]
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●●●
Level 2
4 marks
Start
→
Mark as done
(a)
Work out
(
4
×
10
5
)
×
(
6
×
10
−
2
)
(4 \times 10^5) \times (6 \times 10^{-2})
(
4
×
1
0
5
)
×
(
6
×
1
0
−
2
)
. Give your answer in standard form. [2]
(b)
Work out
(
3.6
×
10
7
)
÷
(
9
×
10
2
)
(3.6 \times 10^7) \div (9 \times 10^2)
(
3.6
×
1
0
7
)
÷
(
9
×
1
0
2
)
. Give your answer in standard form. [2]
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●●●
Level 2
4 marks
Start
→
Standard form in context
19 questions
Lesson
Not started
Mark as done
The distance from the Earth to the Moon is about
3.8
×
10
5
3.8 \times 10^5
3.8
×
1
0
5
km. A rocket travels this distance in
4
4
4
days. How far does it travel each day, on average? Give your answer in standard form.
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Level 2
2 marks
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Mark as done
A computer does
2
×
10
9
2 \times 10^9
2
×
1
0
9
calculations per second. How many does it do in
30
30
30
seconds? Give your answer in standard form.
●●
●●●
Level 2
2 marks
Start
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Mark as done
A country has a population of
6.8
×
10
7
6.8 \times 10^7
6.8
×
1
0
7
and an area of
2.4
×
10
5
2.4 \times 10^5
2.4
×
1
0
5
km
2
^2
2
.
Work out the population density, in people per km
2
^2
2
. Give your answer to the nearest whole number. (2 marks)
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Level 2
2 marks
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Mark as done
Light travels at
3
×
10
8
3 \times 10^8
3
×
1
0
8
metres per second.
The distance from the Sun to the Earth is
1.5
×
10
11
1.5 \times 10^{11}
1.5
×
1
0
11
metres.
Work out how long light takes to travel from the Sun to the Earth.
Give your answer in minutes, correct to the nearest minute. (3 marks)
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Level 2
3 marks
Start
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