Back to: Mathematics Primary 5
HELLO, WELCOME BACK TO CLASS
In division, the dividend is the number that is being divided. The divisor is the number that divides the dividend. The quotient is the result.
To check a division answer, multiply the quotient by the divisor and add the remainder if there is any.
EXAMPLE 1:
Abby has $92. He wants to buy 4 comic books that each cost the same amount. How much will each book cost?
Abby has $92. Each comic book costs the same amount.
So, divide $92 by 4 to find how much each book will cost.
So, each comic book will cost $23.
Divide multiples of 10, 100, and 1000
EXAMPLE 4:
1500 ÷ 5
The basic fact for 1500 ÷ 5 is 15 ÷ 5
15 ÷ 5 = 3
150 ÷ 5 = 30
1,500 ÷ 5 = 300
So, there are 300 people in each line.
EXAMPLE 5: EXAMPLE 6:
Divide 798 by 6 Divide 996 by 4
Divide 3-digit by 2-digit number
DIVISION OF DECIMALS
Recall that Division simply mean sharing equally among a given number.
EXAMPLES:
- Divide 38.88 by 6
Step 1: Divide the whole number
Step 2: Continue the division by putting a decimal point on the quotient
- Share $10.32 equally among 4 boys. How much money will each get?
Solution:
To share equally we divide $10.32 by 4
Therefore, each boy shared $2.58
DIVIDING A DECIMAL BY A DECIMAL
EXAMPLE:
- Divide 4.56 by 0.6
Method 1
We multiply the numerator and denominator by 10 to change the divisor, i.e the denominator to a whole number.
Method 2
We can also shift the decimal points of both the numerator ad denominator 1 place to the right to change the denominator to a whole number.
- Bob spends a total of 68.6 hours writing a paper over a week. What is the average hours per day he worked?
Solution
Divide 68.6 by 7
Therefore, Bob worked 9.8 hours per day.
Quiz
- Divide the following (Remember the rules of moving decimal points to the left)
- 4 ÷ 10
- 4 ÷ 10
- 534 .7 ÷ 100
- 63 ÷ 1000
- 6 ÷ 100
Get more class notes, videos, homework help, exam practice on Android [DOWNLOAD]
Get more class notes, videos, homework help, exam practice on iPhone [DOWNLOAD]