71111— ÷ — = — × — = 22421615 — + — = 40% + — =994 6111— + — = — + — = 5748765 × — = 4 + — = 85118— × — = 2 - — = 9494151— ÷ — = — ÷ — = 57681515 ÷ 15 + 29 × 6 4%x11.5÷0.05=57+30= 710+180=14+50=880÷20=11-0.8=0.55×0.1=6÷0.3= 7.39+0.64=4+0.34=39.3+3=1.8×0.4=- 27 = 70
6.2 + 5.9 + 3.8 + 4.1 250 × 0.32 × 1.2510 : x = 2 : 2 4x + 0.5×6 = 5.5
( 2 — 3 1 3 + — + — )×108 4 9 1 — ÷ 41 + 5 — × 1 — 6 6 41 5 — × 4 — ÷ 5 — × 4 — 2 7 2 7 4 — : x = 7 — : 0.6 3 8 5 — + 3 — + 1 — + 1 — 6 4 6 4 10%x + 22 = 57 x - 7 — = 8 — 8 7 4 - 1 — - 4 — 5 5 9 — + 7 — + 1 — 8 4 8 5 — × 2 — × 6 — 6 7 5
1 13 1 419.2-1= — ÷ — = — ÷ — = 2 2 9 378+24= 17 8 1 780+190= — + — = 75% + — = 3 3 8 28×20= 4 1 1 4840÷20= — + — = — ÷ — = 5 2 2 338-0.7= 1 20.2×0.7= 3 + — = 2 + — =3 38.2÷0.1= 10 10 66.48+0.5= — + — = 2 - — = 9 9 55+0.07= 3 1 1 813.5÷0.09= — + — = — + — = 4 3 9 72-0.59= 3296 ÷ 16 + 93 × 3 32%x - 19 = 48
0.9 + 4.8 + 9.1 + 5.2 25 × 3.2 × 12.5
10 : x = 32 : 3.2 6x - 0.5×9 = 6
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