IMO Practice Test — Place Value
6 Questions • 12 min • Olympiad level
12:00
Question 1 of 6
easy
200 + 30 + 9 = ?
239
293
329
392
Explanation: 239
Question 2 of 6
medium
Value of 8 in 584?
8
80
800
8000
Explanation: 8 in tens place = 80
Question 3 of 6
hard
Which two have same hundreds digit: 123,312,231,321?
123 and 312
312 and 321
123 and 231
231 and 321
Explanation: 312 and 321 both have 3 in hundreds
Question 4 of 6
medium
Hundreds=4 tens=0 ones=6. What number?
406
460
604
640
Explanation: 406
Question 5 of 6
hard
Greatest ones digit: 234,472,815,649?
234
472
815
649
Explanation: 649 has ones digit 9
Question 6 of 6
medium
500 + 6 as a 3-digit number?
56
506
560
5006
Explanation: 506