Maria had 25 pieces of gum. Tommy gave her 16 more pieces. Luis gave her twenty 20 more pieces. How many pieces of gum does Maria have now?
2 answers
25 + 16 + 20 = ?
25 + 16 = 41 then 41 +20 = 61
or
25 + 16 + 20 = 61
or easy to do in head
20 + 20 = 40
5 + 16 = 21
40 + 21 = 61
or
25 + 16 + 20 = 61
or easy to do in head
20 + 20 = 40
5 + 16 = 21
40 + 21 = 61
1 answer