Page 84 - Math Genius C4

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Mind Map
math Creative Thinking
DIvISIoN

Division of 4- and 5-digit Division of 4- and 5-digit Division by 10, 100, 1000,…
numbers by a 1-digit number numbers by a 2-digit number
Division by 10
Dividend Dividend H t O

Divisor 6 5437 906 Q Divisor 15 8976 598 Q 5 7 3 ÷ 10 = 57 R 3
– 54 – 75
037 – 147 Remainder
135
– 36 126 Quotient
1 R – 120 Division by 100
6 R
H t O
8 7 6 ÷ 100 = 8 R 76
Properties of Division Estimated Quotient
Division by 1 Estimated quotient Actual quotient Quotient Remainder
Example: 7 ÷ 1 = 7 20 2000 100 18 1980 110 Division by 1000
Division by itself 18
Example: 5 ÷ 5 = 1 – 20 – tth th H t O
Division of ‘0’ by a number 00 18 6 7 3 2 2 ÷ 1000
Example: 0 ÷ 7 = 0 – 00 – 18 = 67 R 322
Division by ‘0’ 00 00
Example: 8 ÷ 0 is not defined. Quotient Remainder
2000 ÷ 20 = 100 1980 ÷ 4 = 110

Mental Maths Critical Thinking

Tick () the correct option.

1. 8000 ÷ 100 = __________
(a) 800 (b) 80 (c) 8 (d) 1

2. Divisor × __________ + Remainder = Dividend

(a) Quotient (b) product

(c) Remainder (d) none of these

3. The double of a number is 1020. What is half of it?

(a) 2040 (b) 510 (c) 204 (d) 255
4. __________ is the quotient when 9999 is divided by 10.

(a) 9 (b) 99 (c) 999 (d) 9999

5. We cannot divide a number by __________.

(a) 0 (b) 1 (c) itself (d) any number

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