# Grade 6 Mathematics -class Test- Playing With Numbers

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MINU PILLAI
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• 1.

### Another name for a bar is ___________

• A.

Vinculum

• B.

Small bracket

• C.

Big bracket

• D.

Decimal

A. Vinculum
Explanation
Another name for a bar, specifically in mathematics, is Vinculum. A vinculum is a horizontal line used to indicate that the numbers or expressions beneath it are to be treated as a single group, such as in fractions or repeating decimals. The terms "small bracket" and "big bracket" refer to different types of parentheses or brackets used in mathematical expressions, but they do not describe a bar.

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• 2.

### Solve 12 of 3 × (15 +2)

• A.

612

• B.

422

• C.

812

A. 612
Explanation
To solve this expression, we need to follow the order of operations, which is parentheses, multiplication, and then addition. First, we simplify the expression inside the parentheses: 15 + 2 = 17. Then, we multiply 3 by 17: 3 * 17 = 51. Finally, we multiply 12 by 51, which gives us the answer of 612.

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• 3.

### Simplify the numerical expression   :     36 - [18 - {14 - (15 – 4 ÷ 2 x 2)}]

• A.

10

• B.

15

• C.

21

C. 21
Explanation
The expression is simplified by first evaluating the innermost parentheses, which is 4 รท 2 x 2 = 4. Then, we simplify the expression inside the curly braces, which is 15 - 4 = 11. Next, we simplify the expression inside the square brackets, which is 14 - 11 = 3. Finally, we subtract 3 from 36, which gives us the answer of 33.

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• 4.

### Ten multiplied by the sum of six and two is --------------

• A.

( 10+2 ) 6

• B.

10 (6 + 2)

• C.

None

B. 10 (6 + 2)
Explanation
The given question asks for the result of multiplying ten by the sum of six and two. The correct answer is 10 (6 + 2), which means that we first add six and two together to get eight, and then multiply ten by eight to get the final result of eighty.

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• 5.

### The value of 25 + 14 ÷ (5 - 3)

• A.

20

• B.

18

• C.

32

C. 32
Explanation
The given expression involves addition, division, and subtraction. According to the order of operations, we need to perform the division first, followed by the addition. So, we start by evaluating (5-3) which equals 2. Then, we divide 14 by 2, resulting in 7. Finally, we add 25 and 7, giving us the final answer of 32.

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• Sep 01, 2024
Quiz Edited by
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• May 09, 2020
Quiz Created by
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