1) 34 +166 * 2 =34 +332 =366 2) 34 + ( 100 * 2 + 66 * 2 ) =366
85 * 8 - 85 *6 =680 - 510=170 85 * (8 - 6 ) =85 * 2 =170
600 : 15 + 150 : 15 = 40 +10 =50, ( 600 +150 ) : 15 =750 : 15 = 50
225 + 75 * 8 = 225 + 600 =825. 225 + ( 70 * 8 + 5 * 8 ) =825
810 : 9 - 630 : 9 = 90 - 70 = 20 (810 - 630 ) : 9 =180 : 9 =20
1.
1)34+166*2=34+332=366
2)34+(100*2+66*2)=366
2.
1)85*8-85*6=(80+5)*8-6*(80+5)=680-510=170
2)85*(8-6)=170
3.
1)600:15+150:15=40+10=50,
2)(600+150):15=750:15=50
4.
1)225+75*8=225+600=825
2)225+(70*8+5*8)=825
5.
1)810:9-630:9=90-70=20
2)(810-630):9=180:9=20
1) 34 +166 * 2 =34 +332 =366 2) 34 + ( 100 * 2 + 66 * 2 ) =366
85 * 8 - 85 *6 =680 - 510=170 85 * (8 - 6 ) =85 * 2 =170
600 : 15 + 150 : 15 = 40 +10 =50, ( 600 +150 ) : 15 =750 : 15 = 50
225 + 75 * 8 = 225 + 600 =825. 225 + ( 70 * 8 + 5 * 8 ) =825
810 : 9 - 630 : 9 = 90 - 70 = 20 (810 - 630 ) : 9 =180 : 9 =20
1.
1)34+166*2=34+332=366
2)34+(100*2+66*2)=366
2.
1)85*8-85*6=(80+5)*8-6*(80+5)=680-510=170
2)85*(8-6)=170
3.
1)600:15+150:15=40+10=50,
2)(600+150):15=750:15=50
4.
1)225+75*8=225+600=825
2)225+(70*8+5*8)=825
5.
1)810:9-630:9=90-70=20
2)(810-630):9=180:9=20