Adding and Subtracting up to 100: Difficult Problems with Solutions

Problem 1
Add: 35 + 17 =
Problem 2 sent by Lora
There are 28 flower bouquets in a flower shop. 15 were sold. How many bouquets left?
Problem 3
Add: 18 + 54 =
Problem 4
Subtract: 81 - 67 =
Problem 5
39 + 19 =
Problem 6
48 - 19 =
Problem 7
81 - 26 =
Problem 8
77 - 69 =
Problem 9 sent by Sxaunaqcu Rio
Joy has 15 blue marbles and 25 green marbles. How many marbles does Joy have?
Problem 10
33 + 15 + 8 =

Problem 11
+ 36 = 52
Problem 12
44 - = 25
Problem 13 sent by Martin Petrov
There were 56 bees in a hive. 15 bees entered and 46 left the hive. How many were the bees in the hive?
Problem 14
Ana bought candy for 36 cents. She paid $1. How many cents change her back?
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