IMO Practice Test — Advanced Addition
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
medium
Reena has 48 stickers. Gets 2 more sheets of 10. Total?
50
58
68
88
Explanation: 48+20=68
Question 2 of 6
hard
Friends have 24 37 and 15 stamps. Total?
66
76
86
96
Explanation: 24+37+15=76
Question 3 of 6
hard
Box had 56 pencils. Add 28 then remove 15. How many now?
59
69
79
99
Explanation: 56+28=84 then 84-15=69
Question 4 of 6
hard
47 + ___ = 93. Missing number?
36
44
46
56
Explanation: 93-47=46
Question 5 of 6
medium
65 + 35 + 28 = ?
118
128
138
148
Explanation: 65+35=100 then +28=128
Question 6 of 6
medium
Sum is 100. One number is 63. Other is?
27
37
43
47
Explanation: 100-63=37