Math Trivia -1 :)

1. How many months have 30 days in a year?
1. 11 months ( All month except February have 30 days)

2. What will happen when you add 0 to any number?
1. The number is as it is. No change

3. How many different numerals are there in maths?
1. 0.. 9 – 10 numbers

4. How many eggs can u put in an empty basket?
1. Only one (after that the basket is no longer empty)

5. When do giraffes have 8 feet?
1. When there are two giraffes

6. What goes up and never comes down?
1. Age, Height etc

7. In which shape is the birthday caps available?
1. Cone

8. Which weighs the more – 1 kg of feather or 1 kg iron?
1. Both weigh the same

9. How many sevens are there between 1 and 100?
1. 20

10. What is a polygon with four unequal sides are called as?
1. Quadrilateral

Regards
10on10 Team

Assorted Multiplication Rules

Multiply by 5: Multiply by 10 and divide by 2.

Multiply by 6: Sometimes multiplying by 3 and then 2 is easy.

Multiply by 9: Multiply by 10 and subtract the original number.

Multiply by 12: Multiply by 10 and add twice the original number.

Multiply by 13: Multiply by 3 and add 10 times original number.

Multiply by 14: Multiply by 7 and then multiply by 2

Multiply by 15: Multiply by 10 and add 5 times the original number, as above.

Multiply by 16: You can double four times, if you want to. Or you can multiply by 8 and then by 2.

Multiply by 17: Multiply by 7 and add 10 times original number.

Multiply by 18: Multiply by 20 and subtract twice the original number (which is obvious from the first step).

Multiply by 19: Multiply by 20 and subtract the original number.

Multiply by 24: Multiply by 8 and then multiply by 3.

Multiply by 27: Multiply by 30 and subtract 3 times the original number (which is obvious from the first step).

Multiply by 45: Multiply by 50 and subtract 5 times the original number (which is obvious from the first step).

Multiply by 90: Multiply by 9 (as above) and put a zero on the right.

Multiply by 98: Multiply by 100 and subtract twice the original number.

Multiply by 99: Multiply by 100 and subtract the original number.

Regards

10on10 Team

Free Math Worksheets - Roman Numerals

Children of class 5 are familiar with the rules that they need to follow while writing small numbers
using  Roman Numerals.  This worksheets makes a class 5 child logically understand how to write
 large numbers using Roman numerals. It also makes the child use his analytical skills and reason
out if the Roman numerals are written correctly for the Hindu- Arabic numbers.

The Romans were active in trade and commerce and from the time of learning to write they
needed a way to indicate numbers. The system they developed lasted many centuries,
and still sees some specialized use today.

Regards
10on10 Team

Interesting Triangle Facts :)

    Triangles are polygons with the least possible number of sides (three).

    The three internal angles of a triangle always add to 180 degrees.

    An equilateral triangle has three sides of equal length and three equal angles.

    An isosceles triangle has two sides of equal length and two equal angles.

    A scalene triangle has no sides of equal length and no equal angles.

    A right angle triangle has one angle that is 90 degrees.

    An obtuse triangle has one angle larger than 90 degrees.

    An acute triangle has angles that are all less than 90 degrees.

    The longest side of a right angle triangle is called the hypotenuse, it is always found opposite the right angle.

    Trigonometry is the study of the relationship between the angles of triangles and their sides.

    Triangle shapes are often used in construction because of their great strength.

Regards

10on10 Team

Free Math Worksheets for Kids - Number System

Nowadays, the South Asian numbering system, is used  in the Indian subcontinent
(comprising India, Pakistan, Bangladesh and Nepal). It  is based on the Vedic numbering system.
This system groups numbers by two places, rather than the three places which is common in most parts  of the world. The terms lakh and crore are widely used today in India and Pakistan.

In India, the South Asian numbering system is referred to as the Indian system of numbers.
In the International system of numbering, numbers are grouped in threes. Most of the business
transactions and International dealing are done using the International system of numbers.
 There is no lakh or crore in the International system instead there is million and billion.

A 5th class child can use the support of this worksheet to visually and logically understand the
relationship between the Indian and International system of numbers. There are two systems of numbering which are commonly used. They are the South Asian and International system of numbering.

Regards
10on10 Team

Free math worksheet for kids - Smallest and Largest

In one’s day to day life, a person encounters both small and large numbers.  While solving this
worksheet, a 4th class child can analyze and see the relationship between the largest 7 digit number
and smallest 8 digit number.
This worksheet also helps the child understand how to quickly find out the largest or smallest number with a specified number of digits. A 4th class child can improve his logical and analytical skills by working on this sheet.

Regards
10on10 Team

Free worksheets for kids - Predecessor

Children often get confused between the terms ‘ predecessor’ and ‘successor’.
A 3rd class child will be visually assisted in understanding the meaning of predecessor
when the child solves this worksheet. The child logically reasons out and finds out
the 2 numbers that precede the given number.  When a child  is unable to find out the predecessor
of a number mentally he can subtract 1 from the given number to find it.

Regards
10on10 Team