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Multiplying a 3 Digit Decimal Number by a 1 Digit Number Using a Standard Written Method For more maths help & free games related to this, visit: www.makemymathsbetter.com

Multiplying Decimals (3 Digit by 1 Digit)

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Page 1: Multiplying Decimals (3 Digit by 1 Digit)

Multiplying a 3 Digit Decimal Number by a

1 Digit NumberUsing a Standard Written Method

For more maths help & free games related to this, visit: www.makemymathsbetter.com

Page 2: Multiplying Decimals (3 Digit by 1 Digit)

For example 3.97 x 6

Page 3: Multiplying Decimals (3 Digit by 1 Digit)

For example 3.97 x 6Set the question out like this:

Page 4: Multiplying Decimals (3 Digit by 1 Digit)

For example 3.97 x 6Set the question out like this:

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 5: Multiplying Decimals (3 Digit by 1 Digit)

Always make sure that the decimal points are lined up correctly

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 6: Multiplying Decimals (3 Digit by 1 Digit)

Always make sure that the decimal points are lined up correctly

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 7: Multiplying Decimals (3 Digit by 1 Digit)

Then multiply the number in the hundredths column (7)

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 8: Multiplying Decimals (3 Digit by 1 Digit)

Then multiply the number in the hundredths column (7) by 6

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 9: Multiplying Decimals (3 Digit by 1 Digit)

7 x 6 =

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 10: Multiplying Decimals (3 Digit by 1 Digit)

7 x 6 = 42

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 11: Multiplying Decimals (3 Digit by 1 Digit)

7 x 6 = 42The 2 is placed in the answer bar, in the hundredths column

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 12: Multiplying Decimals (3 Digit by 1 Digit)

7 x 6 = 42The 2 is placed in the answer bar, in the hundredths column

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 13: Multiplying Decimals (3 Digit by 1 Digit)

7 x 6 = 42The 4 is placed under the answer bar, under the tenths column

T U . t h

3 . 9 7

X 6 2 9 . 8 2

Page 14: Multiplying Decimals (3 Digit by 1 Digit)

7 x 6 = 42The 4 is placed under the answer bar, under the tenths column

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 15: Multiplying Decimals (3 Digit by 1 Digit)

Next, multiply the number in the tenths column (9)

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 16: Multiplying Decimals (3 Digit by 1 Digit)

Next, multiply the number in the tenths column (9) by 6

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 17: Multiplying Decimals (3 Digit by 1 Digit)

9 x 6 =

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 18: Multiplying Decimals (3 Digit by 1 Digit)

9 x 6 = 54

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 19: Multiplying Decimals (3 Digit by 1 Digit)

9 x 6 = 54This is added to the 4 from under the tenths column

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 20: Multiplying Decimals (3 Digit by 1 Digit)

54 + 4 = 58

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 21: Multiplying Decimals (3 Digit by 1 Digit)

54 + 4 = 58The 8 is put in the tenths column

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2

Page 22: Multiplying Decimals (3 Digit by 1 Digit)

54 + 4 = 58The 5 is placed under the answer bar, under the units column

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2 5

Page 23: Multiplying Decimals (3 Digit by 1 Digit)

Now, multiply the number in the units column (3)

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2 5

Page 24: Multiplying Decimals (3 Digit by 1 Digit)

Now, multiply the number in the units column (3) by 6

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2 5

Page 25: Multiplying Decimals (3 Digit by 1 Digit)

3 x 6 = 18

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2 5

Page 26: Multiplying Decimals (3 Digit by 1 Digit)

3 x 6 = 18This is added to the 5 from under the units column

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2 5

Page 27: Multiplying Decimals (3 Digit by 1 Digit)

18 + 5 = 23

T U . t h

3 . 9 7

X 6

4

2 3 . 8 2 5

Page 28: Multiplying Decimals (3 Digit by 1 Digit)

18 + 5 = 23The 3 is placed in the units column

T U . t h

3 . 9 7

X 6

4

2 9 . 8 2 5

Page 29: Multiplying Decimals (3 Digit by 1 Digit)

18 + 5 = 23The 3 is placed in the units column

T U . t h

3 . 9 7

X 6

4

2 3 . 8 2 5

Page 30: Multiplying Decimals (3 Digit by 1 Digit)

18 + 5 = 23The 2 is placed in the tens column

T U . t h

3 . 9 7

X 6

4

2 3 . 8 2 5

Page 31: Multiplying Decimals (3 Digit by 1 Digit)

18 + 5 = 23The 2 is placed in the tens column

T U . t h

3 . 9 7

X 6

4

2 3 . 8 2 5

Page 32: Multiplying Decimals (3 Digit by 1 Digit)

3.97 x 6 = 23.82

T U . t h

3 . 9 7

X 6

4

2 3 . 8 2 5