Idea 3of 23Builds onPrice ÷ how many, not the other way
Halve the price table down to one
How can you find the price for one without long division?
Today you'll discover
- how a price table works
- why both rows get the same step
- how to finish with one
Think first8 notebooks for $12.00
8 notebooks cost $12.00. At the same price each, what do 4 notebooks cost?
Decide first, then press Next. Follow one column to the next along both rows.
A table with two rows, notebooks and price. The first column says 8 notebooks for $12.00. Curved arrows marked ÷ 2 step to the right above and below. The columns fill in: 4 for $6.00, 2 for $3.00, 1 for $1.50, and the last column is ringed. The last step asks about 12 pencils for $9.00.
See the whole ideathe big idea and the key word, in one place
The big idea
Do the same step to the items and the price until the items reach 1.
Halving to one
Each step halves the notebooks and halves the price. The deal stays the same at every column.
- 8$12.00
- 4$6.00
- 2$3.00
- 1$1.50
Easy to get wrongHalving only one row changes the deal. 4 notebooks for $12.00 is a different, worse price.
Key word
- price table
- a table with the number of items in one row and their price in the other, column by column
Ready to use it?
- Step a price table down to the price for one.
- Say what step was done to both rows.