680 × 274 : 20 - 136
= 186320 : 20 -136
= 9316 - 136
= 9180
915 + 3550 : 25 + 554
= 915 + 142 + 554
= 1057 +554
=1611
83489 + 75 × 30
= 83489 + 2250
=85739
k mk nha bao ngan
680 × 274 : 20 - 136 = 186320 : 20 - 136 = 9316 - 136 = 9180
915 + 3550 : 25 + 554 = 915 + 142 + 554 = 1057 + 554 = 1611
83489 + 75 × 30 = 83489 + 2250 = 85739
680 × 274 : 20 - 136 =9180
915 + 3550 : 25 + 554 = 1611
83489 + 75 × 30 = 85739
minh cung lam giong may ban kia nha
k tui nha
thnaks
680 x 274 : 20 - 136 = 9180
915 + 3550 : 25 + 554 = 1611
83489 + 75 x 30 = 85739