Question

A packet has $10$ straws, and a few more are added. Now, there are $18$ straws in the packet. Choose the correct addition equation for the total number of straws.

• A. $11+7=18$
• B. $9+9=18$
• C. $18+0=18$
• D. $10+8=18$

Answer 1

The correct option is D $10+8=18$

As there are $10$ straws in the packet, one addend will be $10$. In order to find the second addend, we will count forward after $10$ till $18$. We get $8$. Therefore, the second addend is $8$.
$10+8=18$
$8$ more straws are added to a packet.