Grade 06 Mathematics

1. Estimation & Rounding Off
Grade 06 Mathematics
Unit 06

2. How many cars are in this figure?How many fruits are in this figure?
Estimation
Estimation is a rough calculation of the value, number,
quantity, or extent of something, a judgment of the
worth or character of someone or so.
9 10

3. Tell exact number of items in each figure
To know the exact number of items we should count the items. But it is not always possible.
In this situation we use the method of Estimation.
In estimation, we guess the number of items in a collection, by considering the number of
items in a portion of the collection.

4. The number of books in stack B = 7
The number of books in stack A is approximately = 7 x 4 x 5
= 140
Stack A Stack B

5. Rounding Off
Rounding off means making a number simpler but
keeping its value close to what it was.

6. Rounding Poem
Find your number
Look right next door
4 or less just ignore
5 or more, add 1 more
2  1
2  0
20
21
2  7
2  7
2 + 1
27
20 30