Subscribe to our YouTube channel for the latest videos, updates, and tips.


Multiplication by 10, 20, 30, 40, 50, 60, 70, 80, 90

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





3rd Grade Math Lessons

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.



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.




Share this page: What’s this?

Recent Articles

  1. Speed Distance and Time | Relation between Speed Distance and Time

    May 21, 25 12:58 PM

    Speed is defined as the distance covered per unit time. Speed = (Distance Travelled)/(Time Taken) Or, S = D/T. Speed also requires a unit of measurement. If the distance is in kilometres

    Read More

  2. Math Problem Answers | Solved Math Questions and Answers | Free Math

    May 21, 25 12:45 PM

    Partial fraction
    Math problem answers are solved here step-by-step to keep the explanation clear to the students. In Math-Only-Math you'll find abundant selection of all types of math questions for all the grades

    Read More

  3. Test of Divisibility | Divisibility Rules| Divisible by 2, 3, 5, 9, 10

    May 21, 25 10:29 AM

    The test of divisibility by a number ‘x’ is a short-cut method to detect whether a particular number ‘y’ is divisible by the number ‘x’ or not. Test of divisibility by 2: A number is divisible by 2

    Read More

  4. Divisible by 7 | Test of Divisibility by 7 |Rules of Divisibility by 7

    May 21, 25 10:17 AM

    Divisible by 7
    Divisible by 7 is discussed below: We need to double the last digit of the number and then subtract it from the remaining number. If the result is divisible by 7, then the original number will also be

    Read More

  5. Average Word Problems | Worksheet on Average Questions with Answers

    May 20, 25 05:40 PM

    In average word problems we will solve different types of problems on basic concept of average. 1. Richard scored 80, 53, 19, 77, 29 and 96 runs in 6 innings in a series. Find the average runs scored…

    Read More