Long Multiplication: 150 × 3

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

What is 150 × 3?

Answer

150 × 3 =
450

150 × 3 and 3 × 150 are the same product — the order of the factors never changes the answer, only the working. Below, 150 is multiplied by 3 in a column, digit by digit.

150 × 3 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.

 150
×  3
 450
150 × 3 = 450

Step-by-Step Solution

Step 1: Multiply the multiplicand by the last digit of the multiplier, 3: 150 × 3 = 450.

  • 0 × 3 = 0. Write 0.
  • 5 × 3 = 15. Write 5 and carry 1.
  • 1 × 3 = 3, plus the carried 1 makes 4. Write 4.

150 × 3

=

450

Check It, and What It Is Not

Check by dividing back. Multiplication and division undo each other, so 450 ÷ 3 = 150 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.

150 × 3 is a number, not an area. If those are the sides of a room in feet, the answer is 450 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 150 × 3? (The answer is: 450). Enter the multiplicand (e.g. '150') and the multiplier (e.g. '3') and hit the button. The order of the two numbers does not matter — 150 × 3 and 3 × 150 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 150

MultiplicationProduct
95 × 3285
96 × 3288
97 × 3291
98 × 3294
99 × 3297
100 × 3300
110 × 3330
120 × 3360
130 × 3390
140 × 3420
150 × 3450
160 × 3480
170 × 3510
180 × 3540
190 × 3570
200 × 3600
210 × 3630
220 × 3660
230 × 3690
240 × 3720

FAQ

What is 150 × 3?

150 × 3 = 450

Is 150 × 3 the same as 3 × 150?

Yes. Multiplication is commutative, so both come to 450. Only the working differs: this page multiplies by 3, which gives a single partial product.

How do you check that 150 × 3 = 450?

Divide the product back by one of the factors: 450 ÷ 3 = 150 exactly, with no remainder. Multiplication and division undo each other, which is what makes this check work.

What are the partial products of 150 × 3?

There is only one: the multiplier 3 has a single digit, so 150 × 3 = 450 is written straight under the line, with no addition step.

See Also