The number $9$9 is plotted on the number line below.
Find the value of $9+4$9+4.
Find the value of $8+9$8+9.
Find the value of $16+9$16+9.
The number $-7$−7 is plotted on the number line below.
Find the value of $-7+9$−7+9.
Understand addition and subtraction of fractions, decimals, and integers