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有一块布料,做上衣用去78米,做裤子用去34米,还剩12米,这块布料一共多少米 - www问答网

有一块布料,做上衣用去78米,做裤子用去34米,还剩12米,这块布料一共多少米

有一块布料,做上衣用去78米,做裤子用去34米,还剩12米,这块布料一共多少米?

7
8
+
3
4
+
1
2

=
7
8
+
6
8
+
4
8

=2
1
8
(米);
答:这块布料一共2
1
8
米.
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