Idea 6of 21Builds onFind the missing term
Patterns with decimals
Can a pattern grow by less than 1 each time?
Today you'll discover
- patterns that jump by tenths
- patterns that jump by hundredths
- what comes after nine tenths
Think first0.2, 0.4, 0.6, 0.8 … what comes next?
What is the next term after 0.8?
Decide first, then press Next. Line up the decimal places before you add.
A row of boxes, 0.2, 0.4, 0.6, 0.8, then three blanks; jumps marked plus 0.2 appear under them. Then 0.25, 0.50, 0.75, 1.00 extended to 1.25, 1.50, 1.75, and a shrinking row, 2.5, 2.3, 2.1, 1.9, extended to 1.7, 1.5, 1.3. The last step asks about 1.05, 1.10, 1.15, 1.20.
See the whole ideathe big idea and the key word, in one place
The big idea
Decimal patterns follow a rule too, adding or taking away tenths or hundredths.
Compare them0.2 is two tenths. 0.25 is twenty-five hundredths, a quarter. 0.05 is five hundredths.
Easy to get wrongLine up the places. 0.8 + 0.2 is ten tenths, which is 1.0, not 0.10.
Key words
- tenth
- one of ten equal parts of a whole: 0.1
- hundredth
- one of a hundred equal parts of a whole: 0.01
Ready to use it?
- Extend patterns that grow or shrink by tenths or hundredths.
- Find the jump in a decimal pattern.