( 1 — 572+ — + — )×48 46 1 —÷ 12 + 5 —× 1 — 6 6125 —× 8 —÷ 5 —× 8 — 23237 — : x= 8 — : 0.1 6 7 1 —+ 4 —+ 1 —+ 1 — 252525%x+ 17= 53x× 7 —= 7 — 88 9- 1 —+ 2 — 335 —+ 5 —- 1 — 4942 —× 2 —× 3 — 352
7 13 1 7 — ÷ — = — + — = 6 6 7 8 17 4 2 — - — = 40% + — = 5 5 3 7 4 1 8 — + — = — + — = 6 5 2 7 4 5 5 ÷ — = 2 ÷ — = 3 6 5 1 6 — ÷ — = 3 - — = 4 7 7 9 1 6 7 — × — = — × — = 8 3 7 6 1428 ÷ 14 + 68 × 5 4%x 223+25=60-38= 830+270= 26+30=770÷70=19-0.6=0.7×0.7=9.1÷0.7= 5.63-0.69=24.3÷0.09=6.1-0.2=3+0.47= - 29 = 57
4.2 + 8.1 + 5.8 + 1.9 2.5 × 3.2 × 1.25 2 : x = 80 : 1.4 7x - 0.5×5 = 9
( 1 — 4 1 3 + — + — )×90 5 6 1 — ÷ 60 + 3 — × 1 — 4 4 60 9 — × 4 — ÷ 9 — × 4 — 6 7 6 7 1 — : x = 2 — : 0.2 7 3 6 — + 6 — - 1 — + 1 — 7 7 7 7 40%x + 26 = 80 x ÷ 1 — = 1 — 6 4 6 - 1 — - 1 — 2 2 10 — + 5 — + 1 — 9 8 9 3 — × 2 — × 4 — 4 9 3
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