511175-0.75=— ÷ — = — ÷ — = 227864-11=1141660-340=— ÷ — = 40% ÷ — = 99228×90=9611700÷50=— ÷ — = — × — = 853826-0.6=190.6×0.2=7 - — = 4 ÷ — =885.2÷0.4= 7714.37-0.05=— ÷ — = 7 ÷ — = 88419.6+8=941119.4+8=— ÷ — = — × — = 8377211+40=3248 ÷ 16 + 89 × 8 50%x + 15 = 70
8.2 + 8.1 + 1.8 + 1.9 250 × 32 × 12.5
2 : x = 16 : 1.1 9x + 0.5×8 = 7
( 2 — 1 7 3 + — + — )×120 5 8 1 — ÷ 28 + 6 — × 1 — 7 7 28 5 — × 8 — ÷ 5 — × 8 — 6 9 6 9 6 — : x = 4 — : 0.9 7 5 6 — + 6 — - 1 — + 1 — 7 7 7 7 80%x + 23 = 60 x - 1 — = 4 — 6 3 5 - 1 — + 2 — 3 3 7 — + 1 — - 1 — 6 9 6 1 — × 2 — × 2 — 2 11 1
1 1 1 1 — + — = — × — = 2 2 8 3 16 2 3 — ÷ — = 90% × — = 3 3 2 8 1 1 1 — + — = — × — = 9 2 8 2 1 7 3 ÷ — = 2 - — = 7 8 1 1 9 — ÷ — = 4 + — = 7 9 8 8 6 5 1 — × — = — + — = 7 7 4 9 1590 ÷ 15 + 92 × 8 8%x 14.4÷0.06=66-10= 640+240= 28+30=420÷20=33+0.1=0.8×0.1=6.3÷0.3= 2.89+0.61=5+0.35=479-26=6.2+0.13= + 19 = 60
4.6 + 4.5 + 5.4 + 5.5 0.25 × 0.32 × 1.25 10 : x = 32 : 7.1 2x + 0.5×8 = 9.5
( 1 — 1 1 2 + — + — )×64 4 8 1 — ÷ 29 + 3 — × 1 — 4 4 29 3 — × 4 — ÷ 3 — × 4 — 4 9 4 9 1 — : x = 5 — : 0.1 6 4 3 — + 1 — + 1 — + 1 — 4 2 4 2 80%x + 20 = 53 x × 1 — = 1 — 5 5 3 - 1 — + 6 — 7 7 9 — + 7 — + 1 — 8 8 8 9 — × 2 — × 10 — 10 11 9
5 11 1 36-0.78= — + — = — × — = 6 6 8 464+36= 11 8 1 520-140= — - — = 55% ÷ — = 3 3 4 28×50= 8 1 1 7600÷50= — ÷ — = — + — = 7 2 3 629+0.2= 5 30.4×0.2= 9 ÷ — = 5 + — =6 49.2÷0.4= 1 10 81.01+0.76= — × — = 8 × — = 3 9 7310-13= 5 3 4 21.3×0.5= — ÷ — = — + — = 4 2 5 31.4×0.8= 1635 ÷ 15 + 94 × 4 20%x - 30 = 56
4.4 + 2.9 + 5.6 + 7.1 250 × 0.32 × 12.5
6 : x = 64 : 7.6 6x - 0.5×9 = 8.5
( 4 — 1 1 3 + — + — )×135 5 9 1 — ÷ 60 + 7 — × 1 — 8 8 60 1 — × 6 — ÷ 1 — × 6 — 4 3 4 3 1 — : x = 6 — : 0.4 8 5 4 — + 2 — + 1 — + 1 — 5 3 5 3 64%x - 30 = 67 x - 2 — = 6 — 3 7 7 - 1 — - 6 — 7 7 9 — + 5 — + 1 — 8 9 8 2 — × 2 — × 3 — 3 13 2
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