Configure your exercise:Configure:
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numbers:
–
1..101..201..10050..500100..1000
+
+
−
−
×
×
÷
÷
 ×
1234567891011+
crossing the tens barrier (+ & -)
negative numbers
a + b = ?a + ? = c(a + b) • c = ?
use parentheses ()
more options...
system:decimalsroman numbershexadecimal
digits:
 /
(if possible)
comma:
 /
(if possible)
round up:
 /
(if possible)
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