把算式寫完整.
327+915
=327+________+________+________
=________+________+________
=________+________
=________
705-398
=705-________+________
=________+________
=________.

900    10    5    1227    10    5    1237    5    1242    400    2    305    2    307
分析:根據(jù)整數(shù)加減法的運(yùn)算性質(zhì)進(jìn)行解答即可.
解答:327+915
=327+900+10+5
=1227+10+5
=1237+5
=1242
705-398
=705-400+2
=305+2
=307.
故答案為:900+,10,5,1227+,10,5,1237,5,1242,400,2,305,2,307.
點(diǎn)評(píng):本題主要考查了學(xué)生對(duì)運(yùn)算定律的掌握情況.
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科目:小學(xué)數(shù)學(xué) 來源: 題型:

把算式寫完整.
327+915
=327+
900
900
+
10
10
+
5
5

=
1227
1227
+
10
10
+
5
5

=
1237
1237
+
5
5

=
1242
1242

705-398
=705-
400
400
+
2
2

=
305
305
+
2
2

=
307
307

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