What is longmult 4.5*4.5 ?

The solution to longmult 4.5*4.5 is 20.25

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Popular >

Evaluate 4.5*4.5

Solution

long multiplication

4.5 \cdot 4.5

Solution

20.25

Solution steps

4.5 \cdot 4.5

Multiply without the decimal points, then put the decimal point in the answer

45 \cdot 45 = 2025

45 \cdot 45

Line up the numbers

\times 4455

Multiply the top number by the bottom number one digit at a time starting with the ones digit (from right to left)

Multiply the top number by the bolded digit of the bottom number

\times 4455

Mutliply the bold numbers:

5 \cdot 5 = 25

Carry

2

to the column on the left and write

5

in the result line

\frac{\times 2 4 4 5 5}{5}

Add the carried number to the multiplication:

2 + 4 \cdot 5 = 22

Carry

2

to the column on the left and write

2

in the result line

\frac{\times 2 2 4 4 5 5}{2 5}

Add the carried digit,

2

, to the result

\frac{\times 2 2 4 4 5 5}{2 2 5}

Multiply the top number by the bolded digit of the bottom number

\frac{\times 4 4 5 5}{2 2 5}

Mutliply the bold numbers:

5 \cdot 4 = 20

Carry

2

to the column on the left and write

0

in the result line

\frac{\times 2 4 4 5 5}{2 2 0 5}

Add the carried number to the multiplication:

2 + 4 \cdot 4 = 18

Carry

1

to the column on the left and write

8

in the result line

\frac{\times 1 2 4 4 5 5}{2 8 2 0 5}

Add the carried digit,

1

, to the result

\frac{\times 1 2 4 4 5 5}{1 2 8 2 0 5}

Add the rows to get the answer. For simplicity, fill in trailing zeros

\frac{\times 4 4 5 5}{0 1 2 8 2 0 5 0}

225 + 1800 = 2025

+ 01282050

Add the digits of the bolded column:

5 + 0 = 5

\frac{+ 0 1 2 8 2 0 5 0}{+ 5}

Add the digits of the bolded column:

2 + 0 = 2

\frac{+ 0 1 2 8 2 0 5 0}{+ 2 5}

Add the digits of the bolded column:

2 + 8 = 10

\frac{+ 0 1 2 8 2 0 5 0}{+ 2 5}

Carry

1

to the column on the left and write

0

in the bolded column

\frac{+ 1 0 1 2 8 2 0 5 0}{+ 0 2 5}

Add the digits of the bolded column:

1 + 0 + 1 = 2

\frac{+ 1 0 1 2 8 2 0 5 0}{+ 2 0 2 5}

= 2025

= 2025

4.5

has

1

decimal place

4.5

has

1

decimal place

= 20.25

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e v a l u a t e 75% o f 20

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0.4 \cdot 5

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\frac{7}{25}

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6 \cdot 0.5

Evaluate 1.5*4 long multiplication

1.5 \cdot 4

Frequently Asked Questions (FAQ)

What is longmult 4.5*4.5 ?
The solution to longmult 4.5*4.5 is 20.25