Track quiz
Eleven ideas, eleven checks. The table sits first, so you can look back.
| Idea | How it goes |
|---|---|
| Times ten | Each digit moves one column left per zero. |
| Share into ten | Each digit moves one column right per zero. |
| Times a whole number | Multiply the digits. Put the point back. |
| Times another decimal | Multiply the digits. Add the place counts. |
| Which way it moves | Below 1 shrinks a number above 0. Above 1 grows it. |
| Sharing it out | Share column by column. Carry the leftover. |
| The other name | Make the bottom 10, 100 or 1000, if some number can. |
| 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. |
What is 4.8 × 100?
What is 6 ÷ 100?
What is 1.2 × 5?
You know 13 × 12 = 156. What is 1.3 × 1.2?
Is 0.6 × 0.5 more or less than 0.5?
What is 7.2 ÷ 4?
Which decimal is the same as 7/4?
Ribbon costs ₹35 a metre. What do 1.2 m cost?
Which sum has the same answer as 4.8 ÷ 0.6?
Is 7 ÷ 0.2 more or less than 7?
In 2 ÷ 11 the remainders go 2, 9, then 2 again. What happens next?
Part II, Chapter 4 is called Another Peek Beyond the Point. You have moved digits, placed points and shared a decimal.
Next: Connecting the Dots…
Mean and median tell you about a set of numbers.