احسب دون وضع العمليات :
* -24 ×4 = - 113 ×2 = - 37× 3 = - 45 ×2 =.
* -24 × 40 = - 45 × 20 = - 45 × 10 =.
* 37 × 30 = - 113 × 20 = - 37 × 10 =
* 24 × 100 = - 45 × 200 =
* 113 × 100 = - 24 × 400 =