How to calculate 42 multiplied by 18


Long Multiplication

How to calculate 42 multiplied by 18 using long multiplication. Here is step-by-step how to calculate 42 times 18 using long multiplication:

Step 1: Setup
Set up your multiplication problem like this:

              4 2
      x       1 8
                 

Step 2: Multiply
2 x 8 = 16. Put 6 below the line and 1 as a reminder on top:

              1  
              4 2
      x       1 8
                6

Step 3: Multiply
8 x 4 = 32. Take 32 and add 1 from the previous step to get 33. Enter 33 at the bottom:

              4 2
      x       1 8
            3 3 6

Step 4: Add 0
Enter a 0 at the bottom right as a place holder, because you now move over one digit:

              4 2
      x       1 8
            3 3 6
      +         0

Step 5: Multiply
1 x 2 = 2. Put 2 below the line and 0 as a reminder on top:

              0  
              4 2
      x       1 8
            3 3 6
      +       2 0

Step 6: Multiply
1 x 4 = 4. Take 4 and add 0 from the previous step to get 4. Enter 4 at the bottom:

              4 2
      x       1 8
            3 3 6
      +     4 2 0

Step 7: Add to get answer
Add up the bottom two numbers (336 + 420 = 756) to get the answer:

              4 2
      x       1 8
            3 3 6
      +     4 2 0
      =     7 5 6

The bottom line is the answer. Therefore, 42 times 18 equals:

756


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How to calculate 43 multiplied by 18
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