2006-11-17 09:52:43 · 12 answers · asked by Katherine R 1 in Science & Mathematics ➔ Mathematics
123 x 10 = 1230
1230
1230
1230
-------
4920
Finally, a math question I can answer.
2006-11-17 10:00:01 · answer #1 · answered by gone 7 · 0⤊ 0⤋
The reason that you ask this question is that you want to know how to do it "in your head." Here's how: First, take the 40 times 100, that's 4000. Then take the 40 times 20, 800. Then take 40 times 3, 120. 4000 + 800 + 120 = 4920
2006-11-17 10:07:39 · answer #2 · answered by steve_geo1 7 · 0⤊ 0⤋
Use a calculator. If that is not allowed, and if you really don't know how to do this multiplication, try it this way.
100 times 40=4000
20 times 40= 800
3 times 40= 120
add and get 4920
2006-11-17 10:00:36 · answer #3 · answered by mom 7 · 1⤊ 0⤋
123x40. Multiply 123 x 4.
492 Add the 0 after the 2
4,920
2006-11-17 10:09:47 · answer #4 · answered by Max 6 · 1⤊ 0⤋
the same as everyone else, 4920 on the TI-84 plus
2006-11-17 10:04:19 · answer #5 · answered by honest abe 4 · 0⤊ 0⤋
I know everyone already said this, but 4920. And you should get a calculator.
2006-11-17 10:17:29 · answer #6 · answered by annie 2 · 1⤊ 0⤋
4920
2006-11-17 14:12:56 · answer #7 · answered by sam 3 · 0⤊ 0⤋
4920
2006-11-17 10:49:32 · answer #8 · answered by Diana K 1 · 0⤊ 0⤋
4920
2006-11-17 10:14:53 · answer #9 · answered by sophi p 2 · 0⤊ 0⤋
4920
2006-11-17 09:56:28 · answer #10 · answered by gordon_benbow 4 · 0⤊ 0⤋