Basic Math: Test Your IQ! Quiz

1. If David's age is 27 years old in 2011. What was his age in 2003?

17

9

37

19

In 2011, David was 27 years old. To find his age in 2003, we need to subtract 8 years from 2011. Therefore, his age in 2003 would be 19.

Explanation

In 2011, David was 27 years old. To find his age in 2003, we need to subtract 8 years from 2011. Therefore, his age in 2003 would be 19.

2. What is 7% equal to?

0.007

0.07

0.7

7

The correct answer is 0.07 because 7% is equal to 7/100, which can be simplified to 0.07.

Explanation

The correct answer is 0.07 because 7% is equal to 7/100, which can be simplified to 0.07.

3. What is the value of 4/2+5-12?

-5

1

5

3

To find the value of 4/2+5-12, we need to follow the order of operations (PEMDAS/BODMAS). First, we divide 4 by 2, which equals 2. Then, we add 5 to 2, which equals 7. Finally, we subtract 12 from 7, which equals -5. Therefore, the correct answer is -5.

Explanation

To find the value of 4/2+5-12, we need to follow the order of operations (PEMDAS/BODMAS). First, we divide 4 by 2, which equals 2. Then, we add 5 to 2, which equals 7. Finally, we subtract 12 from 7, which equals -5. Therefore, the correct answer is -5.

4. What are three-fifths of 100?

3

5

20

60

Three-fifths of 100 is calculated by multiplying 100 by the fraction 3/5. This can be done by dividing 100 into five equal parts and then taking three of those parts. Each part would be 100/5 = 20, so three parts would be 3 * 20 = 60. Therefore, the correct answer is 60.

Explanation

Three-fifths of 100 is calculated by multiplying 100 by the fraction 3/5. This can be done by dividing 100 into five equal parts and then taking three of those parts. Each part would be 100/5 = 20, so three parts would be 3 * 20 = 60. Therefore, the correct answer is 60.

5. What is the square of 15?

225

625

125

500

The square of a number is the result of multiplying the number by itself. In this case, the square of 15 would be 15 multiplied by 15, which equals 225.

Explanation

The square of a number is the result of multiplying the number by itself. In this case, the square of 15 would be 15 multiplied by 15, which equals 225.

6. I am a number. I have 7 in the one's place. I am less than 80 but greater than 70. What is my number?

70

71

73

77

The number described in the question has a 7 in the ones place and is between 70 and 80. The only number that fits this description is 77.

Explanation

The number described in the question has a 7 in the ones place and is between 70 and 80. The only number that fits this description is 77.

7. In a century how many months are there?

12

120

1200

12000

In a century, there are 100 years. Since each year has 12 months, we can calculate the total number of months by multiplying 100 by 12, which equals 1200. Therefore, there are 1200 months in a century.

Explanation

In a century, there are 100 years. Since each year has 12 months, we can calculate the total number of months by multiplying 100 by 12, which equals 1200. Therefore, there are 1200 months in a century.

8. What is the value of x if x² = 169?

13

17

16

6

The value of x can be found by taking the square root of 169, which is 13. Therefore, the value of x is 13.

Explanation

The value of x can be found by taking the square root of 169, which is 13. Therefore, the value of x is 13.

9. How many years are there in a decade?

5

10

100

1000

A decade consists of 10 years. This is because the term "decade" is derived from the Greek word "deka," meaning ten. Therefore, by definition, a decade represents a period of ten consecutive years.

Explanation

A decade consists of 10 years. This is because the term "decade" is derived from the Greek word "deka," meaning ten. Therefore, by definition, a decade represents a period of ten consecutive years.