This tool has so many possibilities! Use this chart to organize numbers for any operations, round numbers, show arrays, decimal numbers, fractional number, equivalents, and more.
Use this chart to help students keep place value lined up when doing any operation with whole numbers. For example, students may subtract 301-79, lining up the place value. They may also use the open number line to show 79 +1=80, 80+20=100, 100+200=300, 300+1=301. Therefore 301-79=1+20+200+1=222.
The number line may be used for various representations of whole, fractional, or decimal numbers. Consider placing sheet in page protector or a SmartPal sleeve for multiple use. I made a copy on colored paper and placed on a metal cookie sheet. I covered it with contact paper. Students show decimal representation on it using magnetic tiles. They write the fractional and decimal name as well as any possible equivalent representations. The number line is good for showing what two decimal or fractional numbers are near this amount. This is helpful for rounding and estimation.