北师大版2022-2023学年辽宁省沈阳市数学七年级秋季开学摸底考试（一）含解析

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14bஹo_o஺31.ூᑖ᪆௃᪷rᦪsᑖᦪḄtu◀Ḅwox+⚪ᓽ஺914-7=135.63+0.3=5.930.92=0.811-31=3x-§1=Wூ#$௃rᦪsᑖᦪḄtu◀Ḅwox+N⚪ḄᐵM஺32.ூᑖ᪆௃(1)ᢥ᯿t+ᣚsᔠo(2)ᢥ᯿+Ḅឋo(3)ᐜo◀+
ou+ᨬo+(4)ᐜor☢Ḅ+
o᜜☢Ḅ◀+஺_2|A1(1)-71+9+7+92|5_8|1=(*71+7)+("91+9)=1+153(2)20-£-853_=20-(8+8)=20-1=19(3)320-3204-16X5=320-20X5=320-100=22015⚓/19⚓

15711(4)15-j-(1-5-3)Jj41=1514-(5-3))77=1ூ#$௃L⚪ὃ()¦ᑣ¨ᔠwo©ªwo«¬swo+ᑣᮣ®wᵨᡠPḄwojCD°±o஺33.ூᑖ᪆௃(1)᪷E²Ḅ³Lឋ´E²ᓄx¶i·
¸◀5(2)x¶i·¸t¹8,i·
¸◀20%3]3(3)ᐜ´x¶º·ᓄ°Nx,i·
¸◀4஺%25=255x=25X25x=50x=1020%x-8=1220%x-8+8=12+820%x=20x=10014»+42%=604IX=60x=80ூ#$௃¼½Ḅ³LឋsE²Ḅ³LឋN⚪ḄᐵM஺>ஹ¾¿⚪஺34.ூᑖ᪆௃᪷ÀÁḄÂᦪN34ÂᓰÂᦪḄ68%,ᵨ◀+ÄÅÂᦪ
ᵨÂᦪ16⚓/19⚓

16ÆÀÁsÇᡂḄÂᦪÄÅÉᡠÊḄÂᦪᵨÉᡠÊsÇᡂḄÂᦪᑖ=◀ÂᦪÄÅᔜᓰḄËᑖ᳛ÌᡂÍÎᓽ஺34968%=50(Â)50-34-6=10ÏÂÐ10+50=0.2=20%64-50=0.12=12%ÍÎ᝞Òூ#$௃L⚪Ó⌕ὃ()ÍÎ⊤ḄÕᐙᐵMNÄÅᔜ×ḄÂᦪØᡠᓰḄËᑖ᳛஺¦ஹÙÚ▭Ü⚪஺35.ூᑖ᪆௃᪷ᢥE²ᑖÝḄx+´410Þßᙳᑖᡂ(2+5+75)á
ÄÅ2áNZ[Þ஺410XA]=410X41=10ÏÞÐ◤⌕ãᜓQå10Þ஺ூ#$௃⚪Nὃ(ᢥE²ᑖÝæᵨ⚪Ḅᱯ#ØèᐜÄÅáᦪᵨé¿êᑖë
ᑖ=ÄÅᔜ-ᑖᓰᦪḄìᑖ/ìᯠ᪷_?ᦪuᑖᦪḄªîᵨu+஺36.ூᑖ᪆௃´“Òðñáᦻó◤⌕¸0”Y¿ᓫö“1”ᓫö“1”÷øᵨu+CDoᓽ஺17⚓/19⚓

1720X(1-65%)=20X0.35=7ÏᑖùÐúûüὁþÿ⌕
7ᑖᦻ஺ூ௃⚪Ḅᐵᐳ◤⌕20ᑖᓫ!“1”"ᓫ!“1”#$Ḅ"%&ᓫ!“1”Ḅ'ᑖ(')*"ᵨ,-./஺018⚓/319⚓

18019⚓/319⚓