Problems

Compatible Numbers

1.  Tina has six tomatoes, Miriama has two tomatoes, and Liam has three tomatoes. They use nine tomatoes for a salad. How many tomatoes are left?

2.   5 + 2 + 5 - 10 =
3.   7 + 8 + 2 - 9 =

Challenge

4.   1 + 2 + 5 + 2 -7 - 3 =