The number $7$7 is plotted on the number line.
Round $7$7 to the nearest $10$10 and plot it on the blank number line.
The number $379$379 is plotted on the number line.
The number $7$7 is plotted on the number line
The number $131$131 is plotted on the number line.
uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers