Maths quiz hard

Quiz instructions
Quiz by paulxx8
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Last updated: June 22, 2019
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First submittedJune 21, 2019
Times taken396
Average score86.7%
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Hint
Answer
56+56
112
123+123
246
999x2
1998
7709+7709
15418
10000x100
1000000
432+432
864
100+10000
10100
99999+99999
199998
Hint
Answer
75x1000
75000
77777x5
388885
101?10=1010
X
56x100
5600
9000+1234
10234
433+433
866
999x10
9999
+4
Level 37
Jun 24, 2019
999 x 10 is not 9999
+3
Level 60
Aug 7, 2021
the last multiplication has to be corrected. 999*10=9990 and not 9999
+1
Level 24
Sep 29, 2021
this is POO
+1
Level 61
Oct 15, 2021
You call this hard?
+2
Level 37
Aug 7, 2022
999x10 is not 9999

the correct answer is 9990