In dividing numbers we will learn division by 20, 30, 40, …………………, 90, etc.
For examples:
1. Divide 80 ÷ 20
Solution:
80 ÷ 20 = 80 ÷ (2 x 10) = 80 ÷ 2 ÷ 10
We divide 80 by 2 and then the obtained quotient is divided by 10.
So, final quotient = 4
Thus, the quotient = 4
2. Divide 60 ÷ 30
Solution:
60 ÷ 30 = 60 ÷ (3 x 10) = 60 ÷ 3 ÷ 10
We divide 60 by 3 and then the obtained quotient is divided by 10.
So, final quotient = 2
Thus, the quotient = 2
3. Divide 240 by 40
Solution:
240 ÷ 40 = 240 ÷ (4 x 10) = 240 ÷ 4 ÷ 10
We divide 240 by 4 and then the obtained quotient is divided by 10.
So, final quotient = 6,
Thus, the quotient = 6
4. 320 ÷ 80
Solution:
320 ÷ (8 x 10)
So, quotient = 4
(Note: This method is applicable only when dividend is completely divisible by divisor.)
Related Concept
● Addition
● Check for Subtraction and Addition
● Word Problems Involving Addition and Subtraction
● Estimating Sums and Differences
● Multiply a Number by a 2-Digit Number
● Multiplication of a Number by a 3-Digit Number
● Word Problems on Multiplication
● Division of Two-Digit by a One-Digit Numbers
● Division of Four-Digit by a One-Digit Numbers
● Division by 10 and 100 and 1000
● Division by Two-Digit Numbers
4th Grade Math Activities
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