( 2 — 683+ — + — )×13559 1 —÷ 20 + 7 —× 1 — 8 8209 —× 8 —÷ 9 —× 8 — 87875 — : x= 1 — : 0.9 6 3 6 —+ 1 —+ 1 —+ 6 — 7777 16%x- 20 = 43 x× 1 —= 5 — 86 9- 1 —- 8 — 9910— + 1 —+ 1 — 9296 —× 2 —× 7 — 776
5 7 1 94.8-0.27= — ÷ — = — + — = 2 2 8 858+17= 16 8 3 870+220= — + — = 50% + — = 5 5 2 22+70= 6 6 1 9560÷40= — ÷ — = — ÷ — = 5 5 5 884-0.1= 1 60.3×0.2= 5 ÷ — = 3 + — =5 57.2÷0.6= 1 1 52.13+0.01= — × — = 9 - — = 3 7 61.1×0.9= 4 3 4 81.1+0.15= — ÷ — = — + — = 5 2 3 76+0.15= 1428 ÷ 14 + 95 × 5 50%x - 11 = 66
9.2 + 0.5 + 0.8 + 9.5 250 × 32 × 125
8 : x = 50 : 7.1 4x + 0.5×9 = 7.5
( 1 — 4 1 2 + — + — )×90 5 9 1 — ÷ 39 + 7 — × 1 — 8 8 39 1 — × 4 — ÷ 1 — × 4 — 6 5 6 5 1 — : x = 4 — : 0.8 8 3 6 — + 1 — + 1 — + 1 — 7 2 7 2 16%x - 25 = 65 x - 1 — = 1 — 7 6 2 - 1 — + 6 — 7 7 10 — + 7 — - 1 — 9 6 9 9 — × 2 — × 10 — 10 19 9
1 13 1 7148+30= — ÷ — = — + — = 4 4 5 895+10= 11 8 1 660+470= — ÷ — = 80% × — = 3 3 5 17+10= 8 6 1 1840÷60= — × — = — + — = 9 7 2 230-0.4= 1 80.75×0.6= 7 + — = 6 + — =3 77.2÷0.4= 6 1 76.44+0.79= — + — = 7 + — = 5 9 63.6÷0.02= 10 1 5 969.7-9= — + — = — ÷ — = 9 3 4 8388+20= 1818 ÷ 18 + 66 × 7 80%x - 29 = 57
3.8 + 6.8 + 6.2 + 3.2 2.5 × 32 × 12.5
8 : x = 25 : 4.2 6x - 0.5×9 = 7
( 1 — 1 1 2 + — + — )×64 4 8 1 — ÷ 59 + 1 — × 1 — 2 2 59 7 — × 8 — ÷ 7 — × 8 — 2 7 2 7 1 — : x = 1 — : 0.8 8 5 2 — + 1 — - 1 — + 3 — 3 4 3 4 8%x - 18 = 38 x × 3 — = 1 — 4 7 2 - 1 — - 6 — 7 7 5 — + 1 — + 1 — 4 6 4 9 — × 2 — × 10 — 10 11 9
5 13 1 615.6÷0.06= — + — = — × — = 6 6 2 782-16= 11 2 9 970+410= — - — = 30% × — = 7 7 8 16×40= 8 4 1 1840÷70= — ÷ — = — × — = 7 3 3 385-0.9= 1 10.55×0.7= 3 + — = 4 - — =5 37÷0.5= 4 1 12.16+0.67= — ÷ — = 3 + — = 5 7 61+0.26= 5 6 1 159.9+7= — × — = — × — = 4 5 4 91.4×0.4= 3120 ÷ 15 + 92 × 8 64%x + 14 = 76
6.1 + 5 + 3.9 + 5 2.5 × 0.32 × 1.25
10 : x = 20 : 3.1 2x - 0.5×7 = 5.5
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