Year 11
Foundation
Year 11
Foundation
Subtracting two numbers in standard form
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Lesson details
Key learning points
- In this lesson, we will learn how to subtract any two numbers in standard form. We will look at initial cases where powers are equal, and move to more complicated cases where powers are different.
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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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5 Questions
Q1.
1. Work out (2.7 × 10⁶) + (7.3 × 10⁶). Give your answer in standard form.
1 × 10³
10 × 10¹²
10 × 10⁶
Q2.
2. Calculate (4 × 10³) + (4 × 10⁴), give your answer in standard form.
4.4 × 10³
8 × 10³
8 × 10⁴
Q3.
3. Work out (3 × 10⁴) + (4 × 10⁵), give your answer in standard form.
3.4 × 10⁴
4.3 × 10⁴
7 × 10⁴
Q4.
4. Calculate (4.1 × 10⁶) + (3.2 × 10⁵), giving your answer in standard form.
4.42 × 10¹¹
7.3 × 10¹¹
7.3 × 10⁵
Q5.
5. Work out (5 × 10¹) + (5 × 10⁻¹), giving your answer in standard form.
0
10
5.05 × 10¹
5 Questions
Q1.
Work out (9 × 10⁶) - (3 × 10⁶). Give your answer in standard form.
12 × 10⁶
6 × 10
60 × 10⁶
Q2.
Calculate (6.4 × 10³) - (2.3 × 10³). Give your answer in standard form.
6.17 × 10³
8.7 × 10³
Q3.
Work out (3 × 10⁷) - (4 × 10⁶), give your answer in standard form.
1 × 10¹
1 × 10⁷
2.6 × 10⁶
Q4.
Calculate (4.1 × 10⁻²) - (3.2 × 10⁻³), giving your answer in standard form.
0.9 × 10⁻⁵
3.78 × 10⁻³
9 × 10⁻²
Q5.
Work out (7 × 10⁵) - (5 × 10²), giving your answer in standard form.
2 × 10³
2 × 10⁵
6.995 × 10²