怎样算简便就怎样算. (1)4.32+5.43+6.68 (2)15.17-6.8-3.2 (3)34.82-(4.82+15.2) (4
怎样算简便就怎样算.(1)4.32+5.43+6.68(2)15.17-6.8-3.2(3)34.82-(4.82+15.2)(4)15.27+4.72-5.28(5)4...
怎样算简便就怎样算. (1)4.32+5.43+6.68 (2)15.17-6.8-3.2 (3)34.82-(4.82+15.2) (4)15.27+4.72-5.28 (5)4.02-3.5+0.98 (6)5.8-4.5+5.8-4.5.
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(1)4.32+5.43+6.68 =4.32+6.68+5.43, =11+5.43, =16.43; (2)15.17-6.8-3.2 =15.17-(6.8+3.2), =15.17-10, =5.17; (3)34.82-(4.82+15.2) =34.82-4.82-15.2, =30-15.2, =14.8; (4)15.27+4.72-5.28 =19.99-5.28, =14.71; (5)4.02-3.5+0.98 =4.02+0.98-3.5, =5-3.5, =1.5; (6)5.8-4.5+5.8-4.5 =5.8+5.8-(4.5+4.5), =11.6-9, =2.6. |
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