57111.5×0.5=— + — = — + — = 887775+37=1781810-480=— - — = 70% ÷ — = 33816+70=8813570÷30=— ÷ — = — ÷ — = 979466-0.8=110.95×0.2= 7 ÷ — = 5 × — =822.1÷0.1= 8711.54+0.84=— ÷ — = 3 × — = 7644.4-0.13= 64217.2-0.15= — + — = — ÷ — = 553649.1-9=3248 ÷ 16 + 80 × 2 32%x - 19 = 45
4.2 + 5.6 + 5.8 + 4.4 0.25 × 3.2 × 0.125
6 : x = 25 : 4.6 9x + 0.5×3 = 5.5
( 1 — 1 7 2 + — + — )×48 4 6 1 — ÷ 56 + 8 — × 1 — 9 9 56 1 — × 8 — ÷ 1 — × 8 — 4 5 4 5 7 — : x = 8 — : 0.9 8 7 1 — + 6 — + 1 — + 1 — 2 7 2 7 32%x - 21 = 50 x - 6 — = 1 — 7 8 7 - 1 — + 6 — 7 7 7 — + 5 — + 1 — 6 4 6 4 — × 2 — × 5 — 5 19 4
5 5 1 51.7×0.9= — ÷ — = — + — = 8 8 8 679+45= 17 8 1 720-390= — + — = 60% + — = 9 9 8 20+20= 10 1 1 9660÷60= — × — = — + — = 9 3 5 856+0.1= 1 90.9×0.6= 7 - — = 6 ÷ — =5 84.4÷0.2= 4 10 85.14-0.24= — ÷ — = 9 ÷ — = 3 9 79.5+0.17= 2 1 1 189.3-8= — + — = — ÷ — = 3 7 3 31.3×0.7= 1122 ÷ 11 + 66 × 8 64%x - 29 = 72
0.9 + 1.1 + 9.1 + 8.9 0.25 × 0.32 × 125
4 : x = 64 : 4 5x - 0.5×9 = 5.5
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