← Another Peek Beyond the Point

Lesson 13 of 15

The big picture

Show on a big screen

5 min

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Here are the eleven ideas, in order.

Another Peek Beyond the Point, the whole chapter on one screen
Idea	Remember
Times ten	Each digit moves one column left per zero. Fill gaps with 0.
Share into ten	The same move the other way. Open new columns if needed.
Times a whole number	Multiply the digits. Then put the point back.
Times another decimal	Multiply the digits. Add the two place counts.
Which way it moves	Below 1 shrinks a number above 0. Above 1 grows it. At 1 nothing moves.
Sharing it out	Left to right. A leftover becomes ten of the next part.
The other name	Make the bottom 10, 100 or 1000, if some number can. The top gives the digits. The bottom sets the point.
Rates	A rate times an amount gives the bill.
Divide by a decimal	Multiply both numbers by the same 10, 100 or 1000. The answer does not change.
Divide by less than 1	A divisor below 1 makes a number above 0 grow. Above 1 it shrinks.
Never-ending sharing	Either a remainder is 0 and the division ends. Or one comes back and the digits repeat.

Your book's Part II, Chapter 4 is Another Peek Beyond the Point. Go and open it.