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Standard form - questions

▶️ Convert to standard form

1️⃣ Write 0. 000546 in standard form.

A. 5460000
B. 546.0000
C. 5.460000 X 10⁴
D. 5.46 X 10¯⁴

2️⃣ Write 18 in standard form. 

A. 18 X 10¹
B. 1.8 X 10°
C. 18.0 X 10²
D. 1.8 X 10¹

3️⃣ Write 8000 in standard form. 

A. 8 X 10³
B. 0.8 X 10^8
C. 8000.0 X 10³
D. 8.0 X 10^8

4️⃣ Write (12)² in standard form. 

A. 1.23 X 10³
B. 12.3 X 10²
C. 1.44 X 10²
D. 4.41 X 10²

5️⃣ Write 00.102 in standard form. 

A. 0.0102 X 10³
B. 0.102 X 10³
C. 1.2 X 10¯²
D. 1.02 X 10¯²

6️⃣ Write 71 + 0.5 + 0.002 in standard form. 

A. 7.1502 X 10¹
B. 7.152 X 10¯⁴
C. 7.7 X 10¹
D. 7.7 X 10¯⁴

7️⃣ Solve for x in the expression 
70x + 25 =30. Leave your answer in standard form. 

A. 7.1 × 10¯²
B. 7.1 × 10²
C. 7.85 × 10²
D. 7.85 × 10¯²


8️⃣ What is 6.7 × 10⁴ written as an ordinary number?

A. 67104
B. 67000
C. 0.0066
D. 670

9️⃣ What is 3 × 10¯² written as an ordinary number?

A. 300
B. 3100
C. 0.031
D. 0.03

1️⃣0️⃣ How is 45,000 written in standard form?

A. 45 × 10³
B. 4.5 × 10⁴
C. 4.5 × 10³
D. 45 × 10⁴

1️⃣1️⃣ What is 0.00051 written in standard form

A. 5.1 × 10¯⁴
B. 51 × 10¯⁴
C. 5.1 × 10⁴
D. 51 × 10⁴

1️⃣2️⃣ What is 162 × 10³ written in standard form?

A. 1.62 × 10^6
B. 1.62 × 10^5
C. 162,000
D. 162.0 × 10²

1️⃣3️⃣ What is the answer when you work out (6 × 10²) + (3 × 10³)? 
Give your answer in standard form.

A. 3.6 × 10²
B. 3.6 × 10³
C. 1.8 × 10²
D. 9 × 10¹

1️⃣4️⃣ What is the answer when you calculate (3 × 10^5) × (4 × 10^4)? 
Give your answer in standard form.

A. 3.4 × 10^9
B. 12 × 10^9
C. 1.2 × 10^10
D. 7. 0 × 10^9


1️⃣5️⃣ What is the answer when you calculate (12 × 10³ ) ÷ (4 × 10¹ )? 
Give your answer in standard form.

A. 3 × 10²
B. 3.3 × 10¯⁴
C. 3 × 10⁴
D. 3.3 × 10¯²

1️⃣6️⃣ What is the answer when you calculate 
(0.5 × 10³) × (4 × 10²) ÷ (2 × 10¯⁴)? 
Give your answer in standard form.

A. 2.0 × 10¹
B. 2.0 × 10²
C. 1 × 10¹
D. 1 × 10¯¹

1️⃣7️⃣ Calculate 3 ÷ 10² and leave your answer in standard form. 

A. 3 × 10²
B. 300
C. 3 × 10¯²
D. 3 × 10¹

1️⃣8️⃣ Calculate 4.32 ÷ 10⁴ and leave your answer in standard form. 

A. 4.32 × 10⁴
B. 432 × 10¯⁴
C. 4.32 × 10¯²
D. 4.32 × 10¯⁴

1️⃣9️⃣ Calculate (6 × 10^7) ÷ (5 × 10¯²) and leave your answer in standard form. 

A. 1.2 × 10^5
B. 1.2 × 10^9
C. 1 × 10^5
D. 1 × 10^9

2️⃣0️⃣ Expand In the expression 
(2x² + 5) (3x + 2) = 9x. 
Write the coefficient of x in standard form. 

A. 1.6 × 10¹
B. 6 × 10¹
C. 6 × 10°
D. 3.4× 10¹



✏️ Answers

1️⃣ D
2️⃣ D
3️⃣ A
4️⃣ C
5️⃣ D
6️⃣ A
7️⃣ A
8️⃣ B
9️⃣ D
🔟 B

1️⃣1️⃣ A
1️⃣2️⃣ B
1️⃣3️⃣ B
1️⃣4️⃣ C
1️⃣5️⃣ A
1️⃣6️⃣ C
1️⃣7️⃣ C
1️⃣8️⃣ D
1️⃣9️⃣ B
2️⃣0️⃣ C


🤔 Low performance ❔
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