1. Calculează: a) 5x9 = 45 8x5=40 5x7=35 6x5=30 5x4=20 c) 23 + 17+ 28+ hoh 4 x 5 = 43 3x5=92 5x6= 62 + 2x5= 40 + (10 x 5) = b) 35- (7 x 50- (6 x 5) = O 5) = 20 100 - (5 x 85 - (9 x 10) = 10 5) = { 0 68 - (5 x 5) = $3 d) 60 - (4 x 5) = 96-(9 x 5) = 80- (6 x 5) = 75- (7 x 5) = 88 - (5 x 5) =​