Long Multiplication: 42 × 5

"Long Multiplication Calculator" Calculator

Multiplicand (number to be multiplied)

Multiplier (number to multiply by)

What is 42 × 5?

Answer

42 × 5 = 210

42 × 5 and 5 × 42 are the same product — the order of the factors never changes the answer, only the working. Below, 42 is multiplied by 5 in a column, digit by digit.

42 × 5 in a Column

The multiplicand goes on top, the multiplier underneath, both aligned on the right. The multiplier has a single digit, so there is one partial product and the answer goes straight under the line.

  42
×  5
 210
42 × 5 = 210

Step-by-Step Solution

Step 1: Multiply the multiplicand by the last digit of the multiplier, 5: 42 × 5 = 210.

  • 2 × 5 = 10. Write 0 and carry 1.
  • 4 × 5 = 20, plus the carried 1 makes 21. Write 1 and carry 2.
  • No digits are left, so the carried 2 is written in front: the partial product is 210.

42 × 5

=

210

Check It, and What It Is Not

Check by dividing back. Multiplication and division undo each other, so 210 ÷ 5 = 42 must come out exactly, with no remainder.

Fractions are a different calculation. Both factors here are whole numbers; for 2/3 or 2 3/4 use the fraction multiplication calculator, which multiplies numerators and denominators separately.

42 × 5 is a number, not an area. If those are the sides of a room in feet, the answer is 210 square feet — the same arithmetic, a different question, and it is answered by the square footage calculator.

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About "Long Multiplication Calculator" Calculator

This calculator multiplies two whole numbers the way it is done on paper: digit by digit, carrying where the column overflows, then adding the partial products together. For example, it can help you find out what is 42 × 5? (The answer is: 210). Enter the multiplicand (e.g. '42') and the multiplier (e.g. '5') and hit the button. The order of the two numbers does not matter — 42 × 5 and 5 × 42 are the same product — so either number can go on top. Fractions and mixed numbers belong to the fraction multiplication calculator, and the reverse operation is long division.

"Long Multiplication Calculator" Calculator

Multiplicand (number to be multiplied)

Multiplier (number to multiply by)

Products of 42

MultiplicationProduct
32 × 5160
33 × 5165
34 × 5170
35 × 5175
36 × 5180
37 × 5185
38 × 5190
39 × 5195
40 × 5200
41 × 5205
42 × 5210
43 × 5215
44 × 5220
45 × 5225
46 × 5230
47 × 5235
48 × 5240
49 × 5245
50 × 5250
51 × 5255

FAQ

What is 42 × 5?

42 × 5 = 210

Is 42 × 5 the same as 5 × 42?

Yes. Multiplication is commutative, so both come to 210. Only the working differs: this page multiplies by 5, which gives a single partial product.

How do you check that 42 × 5 = 210?

Divide the product back by one of the factors: 210 ÷ 5 = 42 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 42 × 5?

There is only one: the multiplier 5 has a single digit, so 42 × 5 = 210 is written straight under the line, with no addition step.

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