By Poincare H.
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Additional resources for Lecons de mechanique celeste. Theorie de la Lune
The explanation It’s a pain to keep writing things like 3 · 3 · 3 · 3 or 7 · 7 · 7 · 7 · 7, and such calculations occur often enough that we have a shorthand notation for them, known as exponential notation. We write 3 · 3 · 3 · 3 as 34 and we write 7 · 7 · 7 · 7 · 7 as 75. In these examples, the 3 and the 7 are called the bases and the 4 and the 5 are called the exponents. You even have a special key on your calculator to calculate exponents. Simple enough, right? ” It should make sense that 31 is equal to 3 and 71 is equal to 7.
Decimals really are fractions. To get started on this, let’s expand our previous idea of place value in Base 10. 9. 8 Guidepost Understanding decimals and their relationship to fractions. Stop Faking It: Math 35 2 2 Chapter This ﬁgure isn’t complete, though, because as we all know, there is a decimal point and there are place values to the right of the decimal point. 10 shows a more complete picture of Base 10 place value. 10 Decimal point The places to the left of the decimal point represent ones, tens, hundreds, etc.
30 National Science Teachers Association Chapter Previously we pictured division as separating a large collection of blocks into smaller groups, but here we have the number 1, which would be 1 block, divided into three groups. In order to do that, we have to break the block into smaller pieces. 1 shows. You can’t divide one circle into three groups of circles, but you can divide it into three separate pieces. 2 compares everyday division with the division represented by a fraction. 2 OK, what about a fraction like ?