Long Multiplication: 42 × 7

Long Multiplication Calculator
Multiplicand (number to be multiplied)
Multiplier (number to multiply by)

What is 42 × 7?

Answer

42 × 7 =
294

42 × 7 and 7 × 42 are the same product — the order of the factors never changes the answer, only the working. Below, 42 is multiplied by 7 in a column, digit by digit.

42 × 7 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
×  7
 294
42 × 7 = 294

Step-by-Step Solution

Step 1: Multiply the multiplicand by the last digit of the multiplier, 7: 42 × 7 = 294.

  • 2 × 7 = 14. Write 4 and carry 1.
  • 4 × 7 = 28, plus the carried 1 makes 29. Write 9 and carry 2.
  • No digits are left, so the carried 2 is written in front: the partial product is 294.

42 × 7

=

294

Check It, and What It Is Not

Check by dividing back. Multiplication and division undo each other, so 294 ÷ 7 = 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 × 7 is a number, not an area. If those are the sides of a room in feet, the answer is 294 square feet — the same arithmetic, a different question, and it is answered by the square footage calculator.

Related Calculations

See Also

Long Multiplication 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 × 7? (The answer is: 294). Enter the multiplicand (e.g. '42') and the multiplier (e.g. '7') and hit the button. The order of the two numbers does not matter — 42 × 7 and 7 × 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.
Recalculate with different values ↑

Products of 42

MultiplicationProduct
32 × 7224
33 × 7231
34 × 7238
35 × 7245
36 × 7252
37 × 7259
38 × 7266
39 × 7273
40 × 7280
41 × 7287
42 × 7294
43 × 7301
44 × 7308
45 × 7315
46 × 7322
47 × 7329
48 × 7336
49 × 7343
50 × 7350
51 × 7357

FAQ

What is 42 × 7?

42 × 7 = 294

Is 42 × 7 the same as 7 × 42?

Yes. Multiplication is commutative, so both come to 294. Only the working differs: this page multiplies by 7, which gives a single partial product.

How do you check that 42 × 7 = 294?

Divide the product back by one of the factors: 294 ÷ 7 = 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 × 7?

There is only one: the multiplier 7 has a single digit, so 42 × 7 = 294 is written straight under the line, with no addition step.

See Also