1280-850:5*4=1280-170*4=1280-680=600
960:3+2800:400=320+700=1020
4089+2005-47*2=4089+2005-94=6000
270*3+210:42=810+5=815
425:25*900-998=17*900-998=15300-998=14320
4870-2593+25*10=2277+250=2527
6*3209:3=19254:3=6418
8*2023:4=16184:4=4046
5*23417-10305:5=117085-2061=115024
4*12310:2-5890=24620-5890=18730
1) 850:5=170 1,280-170=1,110 1,110х4=4,440
2)960:3=320 2,800:400=7 320+7=327
3)4,089+2,005=6,094 47х2=94 6094-94=6,000
4)270х3=810 210:42=5 810+5=815
5)425:25=17 900х17=15,300 15,300-998=14,302
6)4870-2593=2,277 25х10=250 2,277+250=2,527
7)3,209х6=19,254 19,254:3=6,418
8)2023х8=16,184 16,184:4=4,046
9)23,417х5=117,085 10,305:5=2,061 117,085-2,061=115,024
10)12,310:2=6,155 6,155х4=24,620 24,620-5890=18,730
1280-850:5*4=1280-170*4=1280-680=600
960:3+2800:400=320+700=1020
4089+2005-47*2=4089+2005-94=6000
270*3+210:42=810+5=815
425:25*900-998=17*900-998=15300-998=14320
4870-2593+25*10=2277+250=2527
6*3209:3=19254:3=6418
8*2023:4=16184:4=4046
5*23417-10305:5=117085-2061=115024
4*12310:2-5890=24620-5890=18730
1) 850:5=170 1,280-170=1,110 1,110х4=4,440
2)960:3=320 2,800:400=7 320+7=327
3)4,089+2,005=6,094 47х2=94 6094-94=6,000
4)270х3=810 210:42=5 810+5=815
5)425:25=17 900х17=15,300 15,300-998=14,302
6)4870-2593=2,277 25х10=250 2,277+250=2,527
7)3,209х6=19,254 19,254:3=6,418
8)2023х8=16,184 16,184:4=4,046
9)23,417х5=117,085 10,305:5=2,061 117,085-2,061=115,024
10)12,310:2=6,155 6,155х4=24,620 24,620-5890=18,730