estimation estimation means an approximate calculation
TRANSCRIPT
![Page 1: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/1.jpg)
ESTIMATION Estimation
means an approximate calculation.
![Page 2: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/2.jpg)
Without actual measurement , we estimate Lily’s height to be 120 cm.
…we estimate the board’s length to be 2 wah.
![Page 3: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/3.jpg)
…we estimate the box’ height to be 20 cm.
…we estimate the toy gun’s length to be 10 cm.
![Page 4: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/4.jpg)
Guess
Baby Yan- yan’s height:
a. 68 cmb. 58 cm
![Page 5: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/5.jpg)
The praying mantis’ length:
a. 32mmb. 35mm
Guess
![Page 6: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/6.jpg)
Teacher Toto’s height:
a. 164 cmb. 250cm
Guess
![Page 7: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/7.jpg)
The elephant’s height:
a. 2 wahb. 1 wah
Estimate
![Page 8: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/8.jpg)
BLEEEEEEE!!!!!YOU’RE WRONG
![Page 9: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/9.jpg)
HURRAY!!!!!YOU’RE RIGHT!
![Page 10: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/10.jpg)
Exercises
![Page 11: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/11.jpg)
1. Circle the appropriate eye-estimation.
a b
a. Length of a pen 140 cm 14 cm
b. Height of a student 120 m 120 cm
c. Height of my parent 160 cm 160m
d. Length of a desk 300cm 30m
e. Height of the room 8 m 80 cm
f. Height of a rubber 30 cm 3 cm
g. Length of a comb 20 cm 10 cm
h. Length of a notebook 30 cm 5 cm
![Page 12: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/12.jpg)
2. Estimate the length or height of the objects below. Indicate the errors.
Objects
Estimate Measure Error
Example a. desk 58 cm 60 cm 60 -58= 2 cm
b. pencil
c. chair
d. rubber/eraser
e. notebook
![Page 13: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/13.jpg)
3. Estimate the perimeter of the given shapes in centimeter.Then, measure using the ruler. Indicate the error.
Shapes Estimate (cm) Using ruler (cm) Error (cm)
Example:13-8
=5 cm
a.
b.
c.
d.
e.
5cm 3 cm
Perimeter= 13 cm Perimeter= 13 cm5cm
3 cm 2 cm
3 cm
![Page 14: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/14.jpg)
Exercise 4: Solving Word Problems on Length
a. There are 4 poles located in equal distance from each other. If the distance between the first pole and the last pole is 9 km, what is the distance between the poles in meters.
w w w w9 km
? _ m ? _ m ? _ m
![Page 15: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/15.jpg)
Exercise 4: Solving Word Problems on Length
b. The length of a harvest field is 60 wah. Find the length of one and a half of it in meters.
60 wah
Figure BFigure A
? m
![Page 16: ESTIMATION Estimation means an approximate calculation](https://reader035.vdocuments.us/reader035/viewer/2022081418/5697c0301a28abf838cda9bd/html5/thumbnails/16.jpg)
Exercise 4: Solving Word Problems on Length
c. A cable wire with the length of 4 km is cut into 6 equal pieces. What is the length of each piece in meters.
4 km
? m? m
? m
? m
? m? m