70 x 100 = 7000
70 times 100 is 7000. The 7 sits in the tens column, and multiplying by 100 slides it two columns left into the thousands. Here is the working, plus the area version of the same pair.
70 × 100 = 7,000
Adding 70 to itself 100 times gives the same answer.
Slide the 7 two columns left
Multiplying by 100 shifts every digit two places to the left. The 7 in 70 moves from tens to thousands, and the zeros follow behind it: 7000.
You can also shuffle a zero between the two factors without changing anything. 70 x 100 is the same as 7 x 1000, and the same as 700 x 10. The product only cares about the 7 and the three zeros in total.
The 70 by 100 rectangle
This pair is more often a size than a sum. A sheet 70 cm wide and 100 cm tall has an area of 7000 square centimetres. A square metre holds 10000 square centimetres, so that sheet covers 0.7 of a square metre — a useful check, because the same multiplication in metres reads 0.7 x 1 = 0.7.
The factors of 7000
7000 is 7 x 1000, so it factors as 2 x 2 x 2 x 5 x 5 x 5 x 7. That makes it divisible by 8 (875), by 125 (56), by 7 and by 1000. It is not divisible by 3 or 9 — its digits add to 7.
Nearby answers
- 7 x 100 = 700, one tenth of this.
- 80 x 100 = 8000.
- 70 x 1000 = 70000, one zero further out.
Every whole ten follows the same pattern, and they are all listed on the multiplication answers page.