( 4 — 1103+ — + — )×10849 1 —÷ 32 + 7 —× 1 — 8 8321 —× 8 —÷ 1 —× 8 — 23231 — : x= 4 — : 0.4 5 5 3 —+ 1 —- 1 —+ 3 — 44448%x+11 = 74 x÷ 2 —= 5 — 36 9- 1 —- 7 — 888 —+ 5 —+ 1 — 7278 —× 2 —× 9 — 9138
1 7 1 5 — ÷ — = — ÷ — = 4 4 9 4 11 8 1 — - — = 15% + — = 3 3 5 2 4 1 3 — + — = — × — = 3 3 8 4 6 1 4 - — = 7 + — = 5 4 1 5 1 — + — = 4 ÷ — = 5 6 4 7 4 5 1 — + — = — + — = 8 3 4 3 1635 ÷ 15 + 58 × 5 8%x 1.6×0.4=93+33= 720-160= 27+40=910÷70=18+0.3=0.45×0.9= 8.2÷0.2= 2.92+0.15=16.1÷0.07=1.9×0.8=8÷0.08= - 23 = 54
2.1 + 9.8 + 7.9 + 0.2 250 × 32 × 1.25 6 : x = 4 : 3 9x - 0.5×9 = 9
( 1 — 3 1 3 + — + — )×72 4 6 1 — ÷ 21 + 3 — × 1 — 4 4 21 5 — × 2 — ÷ 5 — × 2 — 2 5 2 5 3 — : x = 1 — : 0.5 4 3 3 — + 3 — + 1 — + 1 — 4 4 4 4 4%x - 24 = 43 x - 1 — = 1 — 8 3 4 - 1 — + 8 — 9 9 10 — + 1 — - 1 — 9 4 9 2 — × 2 — × 3 — 3 15 2
7 1 1 13.7+0.21= — ÷ — = — + — = 8 8 8 372+10= 13 8 1 940+240= — + — = 10% + — = 5 5 5 21+90= 5 3 1 8260÷20= — × — = — + — = 4 2 6 739+0.4= 8 10.45×0.6= 8 + — = 8 + — =9 49.5÷0.5= 8 8 86.25-0.39= — + — = 8 ÷ — = 9 9 77-0.84= 7 1 1 839.9-7= — + — = — + — = 8 2 5 729.7-8= 1122 ÷ 11 + 63 × 4 64%x + 25 = 54
5.9 + 2.2 + 4.1 + 7.8 2.5 × 32 × 0.125
4 : x = 5 : 4.6 2x - 0.5×4 = 8.5
( 3 — 1 1 2 + — + — )×64 4 8 1 — ÷ 33 + 3 — × 1 — 4 4 33 7 — × 2 — ÷ 7 — × 2 — 2 3 2 3 1 — : x = 3 — : 0.7 4 4 8 — + 1 — + 1 — + 1 — 9 2 9 2 4%x - 13 = 65 x ÷ 8 — = 1 — 7 8 6 - 1 — - 7 — 8 8 5 — + 1 — - 1 — 4 8 4 6 — × 2 — × 7 — 7 3 6
7 1 1 2 — ÷ — = — ÷ — = 8 8 5 3 19 4 9 — + — = 50% × — = 7 7 8 8 2 1 3 — × — = — ÷ — = 7 3 6 4 4 1 5 ÷ — = 9 - — = 5 8 5 1 1 — + — = 9 + — = 4 8 7 7 1 5 1 — × — = — + — = 6 3 6 8 3876 ÷ 19 + 65 × 4 2%x 5.1-0.11= 94+30= 880-260= 26×90=980÷70=89+0.2=0.35×0.2= 3.6÷0.3= 6.49+0.98=1.1×0.7=89.5-2=3+0.71= + 15 = 76
7.8 + 7.5 + 2.2 + 2.5 2.5 × 32 × 125 10 : x = 2 : 6.9 6x - 0.5×7 = 8.5
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