Question

Jake has 145 bottle caps and daniel has 143 bottle caps. how many bottle caps do they have in all? 145 143 = 288 which of the following problems could be solved in the same way?
a. ed has 76 model trains and mike has 121 model trains. how many trains do they have altogether?
b. henry has to write 32 thank you letters. he has written 13 so far. how many more letters must he write?
c. mary had 19 oranges. she gave 12 oranges to amy. how many oranges does mary have now?

Answer 1

A because you just add them the others you subtract.