( 2 — 413+ — + — )×12058 1 —÷ 25 + 3 —× 1 — 4 4257 —× 4 —÷ 7 —× 4 — 63638 — : x= 1 — : 0.4 7 4 6 —+ 5 —+ 1 —+ 1 — 7676 64%x+ 16 = 71 x- 1 —= 8 — 37 5- 1 —- 1 — 228 —+ 1 —- 1 — 7471 —× 2 —× 2 — 2171
1 5 1 11.4×0.5= — + — = — + — = 4 4 9 794-33= 11 2 5 980-130= — - — = 70% × — = 3 3 4 25+80= 9 1 1 1770÷70= — × — = — × — = 8 2 9 465-0.2= 4 10.25×0.9= 3 - — = 2 - — =3 87.2÷0.6= 1 1 41.3+0.6= — + — = 7 - — = 5 9 5438-11= 5 8 9 81.8×0.4= — ÷ — = — ÷ — = 4 7 8 79.7-0.21= 1944 ÷ 18 + 48 × 6 32%x + 21 = 36
9.1 + 6.8 + 0.9 + 3.2 2.5 × 3.2 × 125
2 : x = 32 : 2.3 2x - 0.5×6 = 5.5
( 1 — 1 1 2 + — + — )×48 4 6 1 — ÷ 36 + 3 — × 1 — 4 4 36 1 — × 4 — ÷ 1 — × 4 — 6 5 6 5 1 — : x = 4 — : 0.3 4 5 2 — + 5 — + 1 — + 1 — 3 6 3 6 8%x + 29 = 39 x × 6 — = 1 — 7 7 5 - 1 — - 7 — 8 8 4 — + 1 — + 1 — 3 6 3 9 — × 2 — × 10 — 10 21 9
7 5 1 42-0.88= — + — = — + — = 6 6 5 366-49= 17 4 4 850-130= — ÷ — = 40% × — = 5 5 5 22×60= 6 3 1 4550÷50= — + — = — + — = 7 2 7 322-0.3= 7 70.45×0.7= 6 × — = 6 - — =8 68.4÷0.7= 1 1 25.12-0.1= — ÷ — = 8 - — = 9 9 359.8+8= 7 4 8 104.6+0.11= — × — = — ÷ — = 6 3 7 98.8÷0.08= 1365 ÷ 13 + 66 × 7 80%x + 15 = 60
9.4 + 0.3 + 0.6 + 9.7 0.25 × 0.32 × 12.5
8 : x = 80 : 6.9 5x + 0.5×2 = 7.5
( 2 — 4 1 3 + — + — )×90 5 6 1 — ÷ 11 + 8 — × 1 — 9 9 11 9 — × 8 — ÷ 9 — × 8 — 4 9 4 9 1 — : x = 6 — : 0.4 7 7 4 — + 1 — + 1 — + 2 — 5 3 5 3 32%x - 30 = 64 x - 4 — = 5 — 3 6 5 - 1 — + 3 — 4 4 8 — + 5 — + 1 — 7 6 7 2 — × 2 — × 3 — 3 17 2
7 11 1 459.9-2= — + — = — ÷ — = 2 2 8 371+46= 13 8 1 550-330= — + — = 55% ÷ — = 3 3 3 20+60= 8 1 1 6650÷50= — + — = — ÷ — = 7 5 4 574-0.4= 1 70.55×0.7= 7 ÷ — = 8 - — =9 87.2÷0.4= 1 1 18.95-0.32= — ÷ — = 2 × — = 4 4 617.5÷0.07= 6 6 4 614÷0.05= — × — = — + — = 7 5 5 55÷0.02= 1456 ÷ 14 + 89 × 9 40%x - 24 = 49
3.2 + 0.7 + 6.8 + 9.3 250 × 32 × 1.25
8 : x = 20 : 4.3 9x + 0.5×4 = 8.5
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