4.2 x 10 with a little 2 next to the ten.
i did this because in standard form , the decimal needs to be below 10 so i reduced it to 4.2. it then needs to be timesed by 10 twice in order to return it to 420.
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To write 420 in standard form, you would simply write it as 420. Standard form is the usual way of writing numbers, where each digit is in its own place value position. In this case, 420 is already in standard form as it is written with the hundreds place, tens place, and ones place digits.
You write 1,095 millionths in standard form as 1.095 × 10-3
4.375 in standard form is: 4.375 × 100
0.472 in standard form is 4.72x10-1.
It is 6.4*10^0 in standard form or scientific notation
Seventy tens in standard form is 7.0 × 102