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admin · 发表于 2020-5-2 15:20:16

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3. ??????????
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1. ???????????????????????????????
?1????????8???8??????????????????2?????4??
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?2??????????2 x 8 = 16???
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�2 x 8 = 16???
26 � 16 = 10???
10 � ?4-2?= 5????
8 � 5 =� 3???�� ?
?????3 x 2 + 5 x 4 = 26(?)?5 + 3 = 8????
2.??????????????????????????????????????????
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�4 x 8 = 32???
32 � 26 = 6???
6 � ?4-2?= 3????
8 � 3 = 5 ???�� ?
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3 x 2 + 5 x 4 = 26(?)?5 + 3 = 8????
3.??????????????????????????????????????????
?????????35???94??????????????
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?1??????????????35???2 x 35 = 70???
????????94???????94 � 70 = 24???????24??????????????????
?2??????????1????2???4 � 2 = 2 ???????24 � 2 = 12??????
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?3???????? 35 � 12 = 23????
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�2 x 35 = 70???
94 � 70 = 24???
24 � ?4-2?= 12????
35 � 12 = 23???�� ?
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�4 x 35 = 140???
140 � 94 = 46???
46 � ?4-2?= 23????
35 � 23 = 12???�� ?
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?????23 x 2 + 12 x 4 = 94(?)?23 + 12 = 35????
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