1 / 10
00
30⋅[ ]=30030\cdot\left[\ \ \ \right]=30030⋅[ ]=300
30
30⋅[ ]=−15030\cdot\left[\ \right]=-15030⋅[ ]=−150
-5
-32
[ ]⋅21=−315\left[\ \ \ \right]\cdot21=-315[ ]⋅21=−315
-15
7
18
-12
[ ]⋅54=−540\left[\ \ \ \right]\cdot54=-540[ ]⋅54=−540
-10
[ ]⋅−14=420\left[\ \ \ \right]\cdot-14=420[ ]⋅−14=420
-30
-8
إنتهى الإختبار.