Grade Six Mathematics

Answers to last week’s exercise

Exercise 1

a. 4 hundredths d. 6 tens

Exercise 2

b. 8 hundredths e. 9 tenths c. 2 ones f. 3 tens

Hello boys and girls, I trust that you are having an awesome day so far! Welcome back to our Math corner. Last week we began looking at the basic concept of decimals. Today, we will continue to focus on decimals where we will be examining the simple concept of addition and subtraction of same. I urge you to read all concepts, instructions, and problems carefully. Let’s begin.

Addition and Subtraction of Decimals

When adding or subtracting with decimals we can use the column method as we do with typical whole numbers. However, note should be taken to ensure that the decimal points line up with each other.

Let us examine two examples below:

Example 1: Calculate the sum of 23.51 + 14.32.

23.51 +14.32

37.83

Example 2: Calculate the difference of 653.4 – 543.2

653.4 -543.2

110.2

With both examples above, we can clearly see that the digits are lined up correctly under each other, likewise the decimal points.

Here is your opportunity to work independently!

Exercise 1

Read the scenarios carefully and solve the word problems below:

1. 2.

Albert is 13.5 years old. If he is 3.5 years older than his brother James, how old is James?

Ginny has a 15.5 page long book report to finish by Friday. On Monday she does 4.0 pages. On Tuesday she does 5.5 pages. On Wednesday, she does 1.5 pages.

a) How many pages has Ginny done so far? b. How many pages does Ginny have to do on Thursday to finish

her report on time? 3. 4.

Linda, Estrella, and Sofia are all sisters. Linda is 5.35 feet tall, Estrella is 4.68 feet tall, and Sofia is 4.51 feet tall.

a) How much taller is Linda than

Estrella? b) How much taller is Estrella than

Sofia? Matt swims three days a week and rests the other four days. On Monday, he swam a total of 2.4 miles. On Tuesday, he By Stayon Abrams swam 2.63 miles. On Wednesday, he swam 3.11 miles. How much did Matt swim altogether that week?

Excellent work, students!

Below is a fun activity for you to complete. Read each instruction carefully, and have fun while working!

Exercise 2

Follow the directions below, and solve the decimal puzzle:

Across

2: 2.565+9.5+0.245

4: You go on a 7.4 mile run. You run 5.6 miles. How far do you have

left?

5: 9.9+1.6

6: 1.78-1.737

7: 3.8-3.3

8: 4-3.44

9: 0.67+8.9

13: To make lemonade, Jimmy bought lemons for $2.99, some sugar for $3.83 and paper cups for $2. How much money did he spend? 34.4+8.36

The original price of a shirt is $20.54. If the shirt is on sale for a $7.78 discount, how much is the sale price of the shirt?

17: 8.0+0.7+1 14: 15:

Down

1: 1.3+5.8+1.6

2: 3.5+8.745

3: 0.72+0.604

4: Bill weighs 120.43 pounds. Last week he gained 5.32 pounds.

How much does Bill weigh now?

5: 0.4+0.9

Down 7:

8:

10: 11: 12: 16:

0.34+0.129+0.1

1.232-0.24

0.32+5.1

13.9-9.389

The temperature outside this morning was 15.75 degrees. The temperature dropped 8 degrees by the afternoon. What was the new temperature?

12.91-6.24

That’s all for today, boys and girls. Check back next week for the answers to this week’s questions. Have a blessed and productive week ahead. Bye!