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MCQ Practice

Mathematics MCQs

The value of 20² ____.

• A. 200
• B. 300
• C. 400
• D. 500

Explanation:
20² = 400.

If 10x = 200, then x = ____.

• A. 10
• B. 15
• C. 20
• D. 25

Explanation:
x = 200/10.

The value of √256 ____.

• A. 14
• B. 15
• C. 16
• D. 18

Explanation:
√256 = 16.

The value of 16² ____.

• A. 128
• B. 196
• C. 256
• D. 324

Explanation:
16² = 256.

The value of √121 ____.

• A. 9
• B. 10
• C. 11
• D. 12

Explanation:
√121 = 11.

If 8x = 64, then x = ____.

• A. 6
• B. 7
• C. 8
• D. 9

Explanation:
x = 64/8.

The value of 14² ____.

• A. 186
• B. 196
• C. 206
• D. 216

Explanation:
14² = 196.

The value of √196 ____.

• A. 12
• B. 13
• C. 14
• D. 15

Explanation:
√196 = 14.

If 6x = 36, then x = ____.

• A. 4
• B. 5
• C. 6
• D. 7

Explanation:
x = 36/6.

If a number is doubled and becomes 50, original number ____.

• A. 20
• B. 25
• C. 30
• D. 35

Explanation:
x = 50/2.