( 1 — 112+ — + — )×72 49 1 —÷ 11 + 6 —× 1 — 7 7111 —× 8 —÷ 1 —× 8 — 87876 — : x= 1 — : 0.4 7 3 5 —+ 3 —+ 1 —+ 1 — 64642%x-26 = 57 x÷ 8 —= 5 — 76 5- 1 —- 4 — 556 —+ 7 —+ 1 — 5654 —× 2 —× 5 — 594
5 5 1 5 — ÷ — = — ÷ — = 8 8 5 6 16 1 1 — ÷ — = 90% × — = 9 9 2 5 1 1 1 — ÷ — = — ÷ — = 6 2 7 8 5 3 3 + — = 2 ÷ — = 6 2 1 1 2 — ÷ — = 2 - — = 9 8 3 8 1 1 1 — + — = — × — = 9 2 8 3 3280 ÷ 16 + 68 × 8 5%x 9.1÷0.07= 54+49= 600-320= 10×60=720÷30=20-0.6=0.3×0.7=7.7÷0.7= 6.82-0.65=1.7×0.3=3.7+0.14= 19.2-1= + 22 = 49
1.3 + 1.2 + 8.7 + 8.8 250 × 32 × 125 2 : x = 40 : 4.2 8x + 0.5×8 = 8.5
( 3 — 1 5 2 + — + — )×60 5 6 1 — ÷ 58 + 1 — × 1 — 2 2 58 5 — × 4 — ÷ 5 — × 4 — 6 9 6 9 3 — : x = 5 — : 0.3 4 4 8 — + 1 — - 1 — + 1 — 9 2 9 2 8%x + 11 = 46 x - 1 — = 1 — 4 8 6 - 1 — + 1 — 2 2 5 — + 7 — + 1 — 4 6 4 8 — × 2 — × 9 — 9 11 8
1 11 1 31-0.48= — ÷ — = — ÷ — = 6 6 2 486-49= 13 4 1 560-320= — - — = 30% × — = 3 3 6 15×10= 5 4 1 3950÷50= — + — = — + — = 6 5 6 282-0.7= 1 10.5×0.1= 5 + — = 6 × — =9 29÷0.6= 1 8 84.4+0.57= — ÷ — = 6 - — = 7 7 71.5×0.3= 5 1 7 14-0.24= — + — = — + — = 4 3 8 5819-25= 1802 ÷ 17 + 53 × 6 50%x - 18 = 78
6.3 + 1.5 + 3.7 + 8.5 25 × 32 × 0.125
2 : x = 80 : 8 5x - 0.5×8 = 10
( 1 — 6 1 2 + — + — )×80 5 8 1 — ÷ 33 + 4 — × 1 — 5 5 33 1 — × 2 — ÷ 1 — × 2 — 4 5 4 5 9 — : x = 6 — : 0.1 8 7 5 — + 1 — + 1 — + 7 — 6 8 6 8 32%x - 16 = 67 x - 1 — = 1 — 7 6 3 - 1 — + 1 — 2 2 8 — + 1 — + 1 — 7 9 7 6 — × 2 — × 7 — 7 13 6
7 1 1 1 — ÷ — = — + — = 4 4 6 6 11 4 1 — ÷ — = 45% + — = 9 9 4 8 1 1 1 — ÷ — = — ÷ — = 7 2 3 3 3 1 3 + — = 6 ÷ — = 4 6 1 7 1 — × — = 4 × — = 8 8 7 6 6 4 2 — + — = — × — = 7 5 3 3 1144 ÷ 11 + 61 × 8 8%x 5.2+0.17= 82+28= 860+200= 30×60=550÷50=71+0.5=0.35×0.4= 9.8÷0.7= 1.29+0.07=266+42=1.3×0.8=106-27= + 23 = 77
9.6 + 7.4 + 0.4 + 2.6 25 × 32 × 125 8 : x = 64 : 6.9 3x - 0.5×5 = 7
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