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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