kids encyclopedia robot

Names for small numbers facts for kids

Kids Encyclopedia Facts

Naming very small numbers is the same as naming very big numbers, but with one important difference. There is a minus sign over what the 10 in the formula is raised to. So if one wanted to write 0.007 in shorthand form, they would write it 7 x 10−3 since 7 is the third digit after the decimal point (the zero in front of the decimal point does not count). Naming a very small number with lots of different numbers inside it is the same as doing it with a very big number, but again with that one difference of the minus sign. So 0.0000452 would become 4.52 x 10−5 (0.0000452 --> 4.52 x 0.00001 --> 4.52 x 10−5).

Some examples

0.00000000009 = 9 x 10−11
0.000678 = 6.78 x 10−4
0.000000535645 = 5.35645 x 10−7

Names for small numbers

  English name European name
100 One One
10−1 Tenth Tenth
10−2 Hundredth Hundredth
10−3 Thousandth Thousandth
10−4 Ten Thousandth Ten Thousandth
10−5 Hundred Thousandth Hundred Thousandth
10−6 Millionth Millionth
10−9 Billionth Milliardth
10−12 Trillionth Billionth
10−15 Quadrillionth Billiardth
10−18 Quintillionth Trillionth
10−21 Sextillionth Trilliardth
10−24 Septillionth Quadrillionth

Related pages

kids search engine
Names for small numbers Facts for Kids. Kiddle Encyclopedia.