Mathematics is my favorite subject. Even though most of the time I have been creating Logical Puzzles and Sudoku Variation puzzles, I love to solve mathematical puzzles with equal charm. Today I am posting some of the Mathematical Brain Teasers. These Math IQ questions are for kids and teens. Some of these math puzzles are easy. However, some are tough. Many of these Math puzzles can be solved mentally without requiring any paper or pen. However to solve some of the Mathematical challenges, one will require a pen and paper to do the calculations. Topics in these Math Problems range from simple Subtraction, Multiplication, Fractions, etc to Trigonometry. More topics will be covered soon in future posts.

1. A Bus Can Cover A Distance Of 24.4 Km On One Liter Of Petrol. How Far Can It Go On 16.4 Liters Of Petrol?

2. Divide 2.87700 By 25

3. The Product Of Two Decimals Is 365.55. If One Of Them Is 25.5 Find The Other.

4. Ruby Bought 12m of Cloth And Used 5 m75 cm Of It For Her Dress. How Much Cloth Remains Unused?

5. A Man Covers 265km In 5 Hours At A Uniform Speed. Find His Speed In Km/H?

6. The Total Capacity Of A Tub Is 2000 L. It Is Filled With 1246L 40ml Of Water. Find The Volume Of Water Required To Fill The Tub.

7. The Ages Of Five Girls In A Group Are 16 Years, 15 years 8 Months, 12 Years 6 months, 14 Years 4 Months, and 15 Years 9 months. Find the Average Age Per Girl In The Group?

8. Find The Number Whose 12.5% Is 3.5?

9. A Metal Contains 25% of Copper and the Rest Is Gold. Find The Quantity Of Gold And Copper In 625g Of This Metal?

10. Convert 73 Hours Into Days And Hours?

11. What Time Was It 6 Hours 25 Minutes Before 4:15pm?

12. A-Fest Began On 26th January. It Lasted For 20 Days When Will Be The Last Day Of The Fest?

13. A Ray Has .....................End Points.

14. Ashu Weighs 52 Kg 250g. Evanthe Weighs 20kg 750g. Who Weighs More And By How Much?

15. A Scalene Triangle Has All Sides Of ......................... Length.

16. How Many Acute Angles Can A Triangle Have?

17. If One Angle Of A Triangle Measures 120, It Is ....................

18. Diameter Of A Circle=....................X Radius Of The Circle.

Mathematical Puzzles are very fun to solve. There are many different types of puzzles that will tickle your brain. D
o check out the following fun Brainteasers and Puzzles to twist your brain.

## List of Fun Brain Teasers and Puzzles

Now you have solved many Maths Puzzles. It's time now to solve some visual puzzles. Can you find the hidden faces in these picture puzzles?

If you love solving word brain teasers, then you should try these Rebus puzzles in which your challenge is to find the hidden meaning of the Rebus brain teasers.

## Brain Twister Mathematics Puzzles

Time again to solve some fun brain-twister Mathematical Puzzles.

These are the Fun Picture Puzzles in which your challenge is to find the mistake in the given picture puzzle images?

## Answers to Maths Riddles and Puzzles

Most of the answers to these Math IQ Puzzles are given below. For some of the Math Puzzles, the answer link is given next to the puzzle. Do click on the link to see the answer to the math puzzle. However, it will be great if one can solve it without looking at the answers and posting their answers in the comment section. These Math Quiz Puzzles are prepared by my wife and she promised to create some more Math Puzzles in the future. Looking forward to readers' feedback on these Math Problems.

A1. Distance covered by bus on one liter of petrol = 24.4km
Distance covered by bus on 16.4 liters of petrol = 24.4x16.4 = 400.16Km.

A2. 2.87700 ÷ 25 There is an easy way to do it without any confusion about decimals. You divide the number with the given numeral without counting the decimal see how it's done below: The answer is 0.11508 How?? Explained below.
Now your Quotient (Answer) is 11508. Now count the numbers after the decimals in question there are five digits after the decimals so now you have to count five digits from the back of the answer and then put decimals. your outcome is 0.11508. That’s the answer.

A3. Given:
Product of two numbers =365.55
One number is = 25.5
Second number =?
Suppose the second number is Y.
Then Yx25.5= 365.55
Y= 365.55÷25.5
Y=14.33 is the required number.

A4. The total length of the cloth = 1 2m
Cloth used for dress = 5m 75 cm
Cloth that remains unused = 12m- 5 m 75 cm = 12 m – 5.75 m
( 1m=100cm, 75cm=0.75m)
Unused cloth = 6.25m

A5. Distance covered by man = 2 6 5 km
Time taken to cover that distance = 5 H
Speed = Distance ÷ Time
Speed = 2 6 5÷ 5= 5 3 Km/H

A6. Total Capacity of the tub = 2000 L
Amount of water-filled = 1246 L 40 ml
The volume of water required = 2000 L – 1246.040 L
( 1L= 1000ml, 40ml=.040L) = 753.96 L Ans.

A7. Average Age per girl = Sum of the ages of girls ÷ Number of girls
= 16Y + 15Y 8Month + 12Y 6month + 14Y 4month + 15 Y 9Month ÷5
= 72 Y 27 month ÷5
= 74.3÷ 5= 14.8 Y

A8. Suppose the number is Y
According to question 12.5 of Y= 3.5
12.5 x Y=3.5
Y= 3.5/12.5= 0.28 Ans.

A9. Suppose the Total quantity of metal is Y
Amount of copper = 25% 0f Y= 625 g
25xY/100=625
Y= 625x100÷25
Y= 2500g
Quantity of gold = Y- Quantity of copper
= 2500 – 625= 1875g

A10. We know 24 hours = 1 day
73 hours = 73 ÷ 24 days
= 3 Days 1 hour.

A11. Convert 4:15 pm to 24 hours
4:15 pm= 16 hours 15 mins
Now to find time 6 hours 25 mins before
= 16 h 15mins – 6 h 25 mins
= 15 h 75mins – 6 h 25 mins
( Remember 1 H = 60 mins)
= 9 H 50 Mins.
Converting in 12 hours it's 9:50am.

A 12. Fest began = 26th Jan
Last day of the fest= 15th Feb

A13. A ray has one endpoint.

A14. Weight of Ashu = 52 kg 250 g
Weight of Evanthe = 20 kg 750 g
Difference of weight= 52kg 250g – 20 kg 750 g
= 52.250 – 20.750
= 31. 500
= 31 kg 500g
Ashu weighs 31kg 500g more than Evanthe.

A15. A Scalene Triangle Has All Sides Of unequal Length.

A16. A Triangle can have three acute angles.

A17. Obtuse angled triangle

A18 Diameter Of A Circle= 2 X Radius Of The Circle.