( 3 — 352+ — + — )×48 46 1 —÷ 57 + 6 —× 1 — 7 7579 —× 8 —÷ 9 —× 8 — 87871 — : x= 8 — : 0.3 5 7 1 —+ 3 —+ 1 —+ 1 — 242432%x- 17= 61x- 7 —= 1 — 66 3- 1 —- 6 — 776 —+ 5 —- 1 — 5952 —× 2 —× 3 — 3212
1 7 1 3 — ÷ — = — + — = 6 6 5 4 16 2 5 — + — = 10% × — = 3 3 4 5 1 1 1 — + — = — × — = 6 7 2 7 1 3 9 - — = 7 ÷ — = 8 4 2 5 3 — × — = 3 - — = 3 4 4 6 3 5 5 — × — = — × — = 7 2 6 4 1908 ÷ 18 + 30 × 3 2%x 9.9+0.25= 57+49= 890+210= 18×40=910÷70=22-0.4=0.4×0.9=9.6÷0.3= 5.88+0.51=9+0.61=225+45=5.6÷0.04= - 27 = 80
1.6 + 3 + 8.4 + 7 0.25 × 0.32 × 0.125 2 : x = 16 : 8.6 3x - 0.5×3 = 8
( 3 — 1 1 2 + — + — )×48 4 6 1 — ÷ 22 + 5 — × 1 — 6 6 22 7 — × 8 — ÷ 7 — × 8 — 8 5 8 5 1 — : x = 5 — : 0.3 7 6 1 — + 1 — - 1 — + 6 — 2 7 2 7 10%x - 19 = 59 x ÷ 1 — = 2 — 5 3 4 - 1 — + 5 — 6 6 4 — + 5 — + 1 — 3 9 3 1 — × 2 — × 2 — 2 9 1
1 11 1 1 — ÷ — = — × — = 8 8 2 4 16 1 4 — + — = 30% + — = 5 5 3 3 3 1 1 — × — = — ÷ — = 4 2 5 6 3 1 3 - — = 6 - — = 4 2 1 1 5 — × — = 3 - — = 7 8 6 6 1 8 1 — × — = — + — = 5 5 9 6 1853 ÷ 17 + 42 × 3 5%x 1.5×0.7=88-17= 920-310= 25×50=720÷40=44+0.1=0.5×0.9=8.4÷0.2= 5.97+0.01=106-27=39.3-3=587+39= + 22 = 47
3.2 + 1.4 + 6.8 + 8.6 250 × 32 × 0.125 10 : x = 25 : 0.4 4x - 0.5×4 = 6
( 1 — 1 1 2 + — + — )×60 5 6 1 — ÷ 33 + 7 — × 1 — 8 8 33 5 — × 8 — ÷ 5 — × 8 — 4 5 4 5 1 — : x = 5 — : 0.1 4 4 5 — + 7 — + 1 — + 1 — 6 8 6 8 5%x + 29 = 51 x ÷ 1 — = 7 — 6 6 5 - 1 — + 7 — 8 8 6 — + 1 — - 1 — 5 4 5 8 — × 2 — × 9 — 9 17 8
5 1 1 1629+17= — ÷ — = — ÷ — = 2 2 4 272+24= 13 8 1 580+310= — ÷ — = 55% × — = 5 5 8 23+20= 8 1 1 1840÷70= — + — = — × — = 7 2 3 412-0.7= 5 10.15×0.1= 2 × — = 9 + — =4 57.6÷0.4= 1 2 81.12-0.36= — × — = 4 + — = 7 3 94.5-0.27= 7 1 1 6791+41= — + — = — ÷ — = 6 7 3 51.1×0.9= 1664 ÷ 16 + 17 × 2 40%x - 14 = 69
0.9 + 9 + 9.1 + 1 25 × 32 × 0.125
6 : x = 20 : 7.7 9x - 0.5×5 = 6
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