Math 4

Fundamental Operations Fundamental Operations


14. a) In a school assembly, students are arranged in 16 rows with 25 students
in each row. How many students are there in the assembly?
b) In a hall, chairs are arranged in 15 columns with 18 chairs in each
column. How many chairs are there in the hall?
It's your time - Project work!


15. a) A 8-10 year old child needs to drink roughly 1500 ml of water each day.
Estimate, how many millilitres of water do you drink in 1 day and in 1
week?
b) How many grams (or kilograms) of vegetables do your family (or your
hostel) consume in 1 day? Discuss with your family members (or with
hostel incharge) and estimate the quantities of vegetables consumed
in 30 days.
C) How many grams (or kilograms) of rice do your family (or your hostel)
consume in 1 day? Discuss with your family members (or hostel
incharge) and estimate the quantities of rice consumed in 30 days.
16. a) Let's draw as many circles as the number of rows equally in each row
in a chart paper. Then find the number of circles by multiplication.
b) Let's draw as many circles as the number of columns equally in
each column in a chart paper. Then find the number of circles by
multiplication.
3.9 Division - Looking back


Let's investigate a few interesting ideas about division from these
illustrations.
When 6 pencils are shared between 2 children, how many pencils will each
share?

6 ÷ 2 = 3 Each will share 3 pencils.

How many twos are there in 6?
6 ÷ 2 = 3 There are 3 twos in 6.
Classwork - Exercise

1. Let's tell and write the correct numbers in the blank spaces.

a) If 3 children share 6 pencils, how many does each get?


Each gets ÷ = pencils.
How many twos are there in 6? ÷ =
49
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vedanta Excel in Mathematics - Book 4
Approved by Curriculum Development Centre, Sanothimi, Bhaktapur v edanta Ex c e l in Mathematics - Book 4