小学五年级数学口算1000题.doc

文档介绍：+15X6二
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+20三2=
+8=
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+20X5二
+8X16=

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+80=
+70=
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+20=
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+60三3=
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+18三2=
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+729=
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+70=
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+80=
+15X6=
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+20三2=
+8=
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+20X5=
+840=
+12三3+20=
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7.(80三20+80)三4=
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+(10010X5)=
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+45=
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======================
80=
80===================
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17x400
100口630
＋

14－


＋
10－
4^200

－
^150


＋

420^350
25x120
135^
3/4+1/4=
2+4/9=
3-2/3=
3/4-1/2=
1/6+1/2-1/6=
(+)=
7/8+3/8=
3/10+1/5=
4/5-7/10=
2-1/6-1/3=
^170




1m50
6m120
－
17x400
100－630
＋

14－



10－
4^200