( 1 — 312+ — + — )×64 48 1 —÷ 22 + 6 —× 1 — 7 7229 —× 4 —÷ 9 —× 4 — 47473 — : x= 1 — : 0.2 4 5 3 —+ 3 —- 1 —+ 1 — 44448%x-26 = 51 x÷ 6 —= 1 — 76 4- 1 —- 6 — 774 —+ 5 —+ 1 — 3438 —× 2 —× 9 — 998
1 7 1 11.5×0.4= — ÷ — = — ÷ — = 6 6 4 764+29= 13 2 2 760-400= — ÷ — = 30% ÷ — = 9 9 3 25×90= 4 1 1 1550÷50= — ÷ — = — + — = 3 7 9 446-0.7= 10 80.25×0.5= 7 - — = 5 + — =9 77.7÷0.7= 1 1 14.01-0.15= — + — = 7 ÷ — = 8 4 6326-12= 8 1 1 72.4÷0.02= — ÷ — = — ÷ — = 9 2 3 823.2÷0.08= 2508 ÷ 12 + 39 × 3 80%x - 20 = 71
7.3 + 1 + 2.7 + 9 0.25 × 3.2 × 0.125
4 : x = 40 : 7.8 2x + 0.5×9 = 6
( 1 — 6 10 2 + — + — )×90 5 9 1 — ÷ 18 + 5 — × 1 — 6 6 18 5 — × 2 — ÷ 5 — × 2 — 6 7 6 7 9 — : x = 5 — : 0.9 8 6 8 — + 1 — + 1 — + 3 — 9 4 9 4 10%x - 19 = 77 x - 8 — = 1 — 7 7 6 - 1 — - 2 — 3 3 9 — + 7 — - 1 — 8 9 8 2 — × 2 — × 3 — 3 19 2
1 11 1 3 — ÷ — = — ÷ — = 8 8 7 2 17 4 5 — ÷ — = 95% ÷ — = 9 9 4 4 4 1 7 — ÷ — = — ÷ — = 3 3 3 8 1 7 9 + — = 4 - — = 9 8 4 8 1 — ÷ — = 7 × — = 5 7 6 4 1 8 1 — × — = — × — = 5 7 7 9 1378 ÷ 13 + 87 × 6 4%x 1.8×0.5=53+40= 660-460= 15+10=780÷60=47+0.2=0.9×0.2=9÷0.5= 1.81-0.97=3.3÷0.03= 3.2-0.17= 4-0.17= + 26 = 39
2.5 + 8 + 7.5 + 2 0.25 × 3.2 × 12.5 10 : x = 40 : 8.6 5x - 0.5×8 = 6.5
( 3 — 5 1 2 + — + — )×48 4 6 1 — ÷ 41 + 3 — × 1 — 4 4 41 5 — × 4 — ÷ 5 — × 4 — 2 9 2 9 1 — : x = 6 — : 0.5 8 5 7 — + 2 — - 1 — + 1 — 8 3 8 3 8%x + 21 = 53 x × 1 — = 1 — 8 3 7 - 1 — + 8 — 9 9 6 — + 5 — + 1 — 5 8 5 9 — × 2 — × 10 — 10 13 9
1 13 1 15+0.56= — ÷ — = — + — = 2 2 6 581+28= 19 1 7 540-270= — + — = 70% × — = 9 9 6 29+80= 5 1 1 4660÷20= — ÷ — = — ÷ — = 4 5 6 392+0.8= 6 50.85×0.4= 7 + — = 4 × — =5 42÷0.1= 1 7 13.69-0.38= — ÷ — = 3 + — = 9 6 41.5×0.5= 8 1 1 3874-46= — ÷ — = — + — = 9 2 5 4200-34= 2678 ÷ 13 + 46 × 9 10%x - 29 = 37
3.9 + 5.6 + 6.1 + 4.4 0.25 × 32 × 12.5
10 : x = 5 : 7.9 2x - 0.5×7 = 8.5
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