Idea 7of 21Builds onPatterns with decimals
Patterns that times by 10
What happens to a number when a pattern keeps dividing by 10?
Today you'll discover
- a pattern that is not adding or taking away
- how the digit moves place
- patterns that multiply by 10
Think first500, 50, 5 … what comes next?
What is the next term after 5?
Decide first, then press Next. Follow one digit as it changes place.
A row of boxes, 500, 50, 5, then two blanks; each jump is marked divide by 10, and the blanks fill with 0.5 and 0.05. Then a second row, 0.07, 0.7, 7, extended to 70 and 700, each jump marked times 10.
See the whole ideathe big idea and the key word, in one place
The big idea
Times 10 moves each digit one place left; divide by 10 moves it one place right.
One digit, moving
The same 5, one place smaller each time.
- hundreds500
- tens50
- ones5
- tenths0.5
- hundredths0.05
Easy to get wrongA ÷ 10 pattern shrinks, but its jumps are not equal take-aways. Check a term by multiplying back by 10.
Key word
- place value
- what a digit is worth because of where it sits: hundreds, tens, ones, tenths, hundredths
Ready to use it?
- Extend patterns that multiply or divide by 10.
- Say which place a digit moves to.