2nd Quarter Elective 6

Elective 6

by Patricia Diomampo

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​Decimal

​a decimal number can be defined as a number whose whole number part and the fractional part is separated by a decimal point.

​Video presentation

https://www.youtube.com/watch?v=9frz4ODJUc0​

​Parts of Decimal

​Decimal Places

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​Addition and Subtraction of Decimals

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​Addition and Subtraction of Decimals

​One day, Precious, Andrea’s younger sister needed 4 pieces of ribbon for her project. Linda gave her yellow, pink, blue, and red ribbons with lengths 0.2 m, 0.48m, 0.3m and 0.15m respectively.

1. How long are the yellow and blue ribbons if put together?

​2. How long are the pink and blue ribbons if put together?

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​Show your solutions and answers on your board.

​1. yellow = 0.2m, ​blue= 0.3 m

0.2

​ + 0.3

​ 0.5

​2. pink= 0.48m, blue= 0.3m

​ 0.48

​ + 0.3

​ 0.78

​Find the sum or difference on your boards.

1) 0.23 + 0.72 =______

2) 0.002 + 0.234 + 0.3141 =________

3)0.4213 + 0.031 + 2.1122 =________

4) 0.0925 – 0.033 = ____

5) 0.5571 – 0.1032 = ___

​What will you do if you receive excess change from the amount/goods you bought?

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​Marianne bought a kilo of mango at Php 45.50 and pineapple at Php 35.00. Is it right to receive a change of Php 29.50 at her Php100.00? Why?

​​Marianne bought a kilo of mango at Php 45.50 and pineapple at Php 35.00. Is it right to receive a change of Php 29.50 at her Php100.00? Why?

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What does the problem ask for?

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​What are the given facts?

​Marianne bought a kilo of mango at Php 45.50 and pineapple at Php 35.00. Is it right to receive a change of Php 29.50 at her Php100.00? Why?

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What operations are needed to solve the problem?

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How much change did she get? Is it the right amount?

​If you were given an excess change what will you do?

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Is it good to eat fruits? Why?

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What good character traits should we show given this kind of situation?

​Generalization:

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​What are the steps in adding or subtracting decimals?

​Solve the missing number on your boards

1. ____ + 0.362 = 0.841

2. 0.56 + ____ = 0.9365

3. ____ - 0.4553 = 0.189

4. 0.743 - _____ = 0.58

5. 0.8644 – 0.3729 = ___

Fill in the Blank

0.2356 + 0.1156

Fill in the Blank

2.7651 + 3.3346

Fill in the Blank

 6.2785 + 11.1543

Fill in the Blank

0.721 – 0.4625

Fill in the Blank

0.9623 – 0.3478

​Assignment:

​Do workbook page 25-28.

​Block 5 S1, S2, S3 and S4

​Aim

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​pineapple farm

​sugarcane farm

​1. Describe the pictures you have seen?

2. What makes it beautiful?

3. Do you want to own a farm too in the near future? Why

4. How will you take good care of it?

​Mr. Tero and other farmers were harvesting tomatoes for the town’s Tiangge Day. They were able to fill 8.75 kaings each weighing 6.51 kilograms. How many kilograms of tomatoes were harvested for the Tiangge Day?

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a. What is being asked in the problem?

b. What are given?

c. What operation is needed to solve the problem?

d. What is the number sentence?

Fill in the Blank

0.78 x 6

Fill in the Blank

0. 29 X 42

Fill in the Blank

0.59 X 0.04

Fill in the Blank

0.86 X 0.57

Fill in the Blank

42.53 X 1.73

Fill in the Blank

13.56 X 9.08