Months and Days

We will discuss about the months and days in a year. There are 12 months in a year.

They are: January, February, March, April, May, June, July, August, September, October, November and December.

The names of the months of the year, number of days in each month and their short form are as follows:

Months of the year

1st month     January

2nd month     February

3rd month     March

4th month     April

5th month     May

6th month     June

7th month     July

8th month     August

9th month     September

10th month    October

11th month    November

12th month    December

Number of days

31

28 (or 29)

31

30

31

30

31

31

30

31

30

31

Short form

Jan.

Feb.

Mar.

Apr.

May

June

July

Aug.

Sep.

Oct.

Nov.

Dec.

Close your hand into a fist and then count for the knuckles. We will see that all the months with 31 days are counted on the knuckles. The rest come in between the knuckles.

Always start with January on the knuckle of the forefinger then February on the space between this knuckle and the next knuckle and so on.

To find the number of days in a year we need to calculate

(7 × 31) + (4 × 30) + (1 × 28)

= 217 + 120 + 28

= 365

There are 365 days in a year. One year in four years has an extra day. A year with 366 days is called a leap year. Every fourth year is a leap year. The extra day is added to February which then has 29 days. Some of the leap years are: 1968, 1972, 1976, 1980, 1984, 1988, 1992, 1996, 2000, etc.

How do we find the next leap year that comes after 2000?

We know, a week has 7 days. Now to find the number of weeks in a year we need to divide 365 by 7.

So, 365 ÷ 7 = 52 weeks and 1 day

We can learn from the calendar that:

7 days = 1 week

About 52 weeks = 1 year

12 months = 1 year

365 days = 1 year

366 days = 1 leap year

about 4 weeks = 1 month

10 years make one decade

100 years make one century

1000 years make one millennium

Note:

The years from 1900 to 1999 is known as the twentieth century.

The years from 2000 to 2099 is called twenty-first century.

The years 1001 to 2000 equal 1000 years that makes one millennium.





2nd Grade Math Practice

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