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Adding and subtracting up to 10
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Adding and Subtracting up to 100
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Practice
Adding and Subtracting up to 100
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Adding and Subtracting up to 100: Difficult Problems with Solutions
Problem 1
Add: 35 + 17 =
Solution:
35 + 17 = 52
Problem 2 sent by Lora
There are 28 flower bouquets in a flower shop. 15 were sold. How many bouquets left?
Solution:
28 - 15 = 13
Problem 3
Add: 18 + 54 =
Solution:
18 + 54 = 72
Problem 4
Subtract: 81 - 67 =
Solution:
81 - 67 = 14
Problem 5
39 + 19 =
Solution:
39 + 19 = 58
Problem 6
48 - 19 =
Solution:
48 - 19 = 29
Problem 7
81 - 26 =
Solution:
81 - 26 = 55
Problem 8
77 - 69 =
Solution:
77 - 69 = 8
Problem 9 sent by Sxaunaqcu Rio
Joy has 15 blue marbles and 25 green marbles. How many marbles does Joy have?
Solution:
15 blue + 25 green = 40 marbles
Problem 10
33 + 15 + 8 =
Solution:
33 + 15 = 48
48 + 8 = 56
Problem 11
+ 36 = 52
Solution:
52 - 36 = 16
so
16
+ 36 = 52
Problem 12
44 -
= 25
Solution:
44 - 25 = 19
so 44 -
19
= 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?
Solution:
(56 + 15) - 46 = 71 - 46 = 25
Problem 14
Ana bought candy for 36 cents. She paid $1. How many cents change her back?
Solution:
$1 = 100 cents, 100 - 36 = 64 cents
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