Estimation
Category : 2nd Class
OBJECTIVES
· Students will involve in estimating real-life quantities such as distance, areas and volumes.
· Estimation allows students to make judgements about how much time, money, food ? they will need.
· In estimation, students use their mathematical reasoning which ultimately saves time and money.
INTRODUCTION
Estimation is a rough calculation of the value, number, quantity, or extent of something.
Examples
1.
How many sweets are in the box? Estimate.
(a) 6 (b) 7
(c) 8 (d) 9
Ans. (b) There are 7 sweets in the box
2. Reha went to the zoo and saw some Giraffes and Alligators. She made a picture graph of the animals at the zoo:
Which animal did she see fewer of?
(a) Alligators (b) Giraffes
(c) Both (d) None of them
Ans. (b) Count the number of each animal in the graph. She saw 7 Alligators and 3 Giraffes. So, she saw fewer Giraffes.
3. Which bus is the shortest among the following?
(a) P (b) Q
(c) R (d) S
Ans. (d) Bus S is shortest among them.
4. Which tower is taller than B?
(a) A (b) B
(c) C (d) D
Ans. (d) Tower D is taller than B.
5. Estimate the weight of a rubber?
(a) 2 g (b) 2 kg
(c) 200 g (d) 5 kg
Ans. (a) The estimated weight of a rubber is 2g.
You need to login to perform this action.
You will be redirected in
3 sec