Multiplication by 10
To multiply a number by 10, we simply put a zero to the right of the number.
1 × 10 = 10
2 × 10 = 20
3 × 10 = 30
4 × 10 = 40
5 × 10 = 50
6 × 10 = 60
7 × 10 =70
8 × 10 = 80
9 × 10 = 90
Multiplication by 20
To multiply a number by 20 we multiply the given number by 2 and put one zero to the right of product.
1 × 20 = 20
2 × 20 = 40
3 × 20 = 60
4 × 20 = 80
5 × 20 = 100
6 × 20 = 120
7 × 20 = 140
8 × 20 = 160
9 × 20 = 180
Multiplication by 30
To multiply a number by 30 we multiply the given number by 3 and put one zero to the right of product.
1 × 30 = 30
2 × 30 = 60
3 × 30 = 90
4 × 30 = 120
5 × 30 = 150
6 × 30 = 180
7 × 30 = 210
8 × 30 = 240
9 × 30 = 270
Multiplication by 40
To multiply a number by 40 we multiply the given number by 4 and put one zero to the right of product.
1 × 40 = 40
2 × 40 = 80
3 × 40 = 120
4 × 40 = 160
5 × 40 = 200
6 × 40 = 240
7 × 40 = 280
8 × 40 = 320
9 × 40 = 360
Multiplication by 50
To multiply a number by 50 we multiply the given number by 5 and put one zero to the right of product.
1 × 50 = 50
2 × 50 = 100
3 × 50 = 150
4 × 50 = 200
5 × 50 = 250
6 × 50 = 300
7 × 50 = 350
8 × 50 = 400
9 × 50 = 450
Multiplication by 60
To multiply a number by 60 we multiply the given number by 6 and put one zero to the right of product.
1 × 60 = 60
2 × 60 = 120
3 × 60 = 180
4 × 60 = 240
5 × 60 = 300
6 × 60 = 360
7 × 60 = 420
8 × 60 = 480
9 × 60 = 540
Multiplication by 70
To multiply a number by 70 we multiply the given number by 7 and put one zero to the right of product.
1 × 70 = 70
2 × 70 = 140
3 × 70 = 210
4 × 70 = 280
5 × 70 = 350
6 × 70 = 420
7 × 70 = 490
8 × 70 = 560
9 × 70 = 630
Multiplication by 80
To multiply a number by 80 we multiply the given number by 8 and put one zero to the right of product.
1 × 80 = 80
2 × 80 = 160
3 × 80 = 240
4 × 80 = 320
5 × 80 = 400
6 × 80 = 480
7 × 80 = 560
8 × 80 = 640
9 × 80 = 720
Multiplication by 90
To multiply a number by 90 we multiply the given number by 9 and put one zero to the right of product.
1 × 90 = 90
2 × 90 = 180
3 × 90 = 270
4 × 90 = 360
5 × 90 = 450
6 × 90 = 540
7 × 90 = 630
8 × 90 = 720
9 × 90 = 810
Questions and Answers on Multiplication by 10, 20, 30, 40, 50, 60, 70, 80, 90:
I. Find the product:
(i) 32 × 20 = ……….
(ii) 26 × 10 = ……….
(iii) 24 × 30 = ……….
(iv) 25 × 20 = ……….
(v) 9 × 70 = ……….
(vi) 4 × 80 = ……….
(vii) 22 × 10 = ……….
(viii) 18 × 40 = ……….
(ix) 8 × 90 = ……….
Answer:
I. (i) 640
(ii) 20
(iii) 720
(iv) 500
(v) 630
(vi) 320
(vii) 220
(viii) 720
(ix) 720
II. Fill in the blanks:
(i) 7 × …….. = 140
(ii) 30 × 5 = ……..
(iii) 50 × …….. = 500
(iv) …….. × 25 = 250
(v) 22 × 30 = ……..
(vi) 20 × 80 = ……..
(vii) 10 × …….. = 820
(viii) 5 × 80 = ……..
(ix) …….. × 10 = 620
Answer:
II. (i) 20
(ii) 150
(iii) 10
(iv) 10
(v) 660
(vi) 1600
(vii) 82
(viii) 400
(ix) 62
From Multiplication by 10, 20, 30, 40, 50, 60, 70, 80, 90 to HOME PAGE
Didn't find what you were looking for? Or want to know more information about Math Only Math. Use this Google Search to find what you need.
Dec 01, 23 01:16 AM
Nov 30, 23 10:59 PM
Nov 30, 23 01:08 PM
New! Comments
Have your say about what you just read! Leave me a comment in the box below. Ask a Question or Answer a Question.