计算. (253-159)×(27÷9) 6.8+2.37+7.63+4.2 11- 1 3 - 2 3 5
计算.(253-159)×(27÷9)6.8+2.37+7.63+4.211-13-2358÷[(12+23)×470.6×(5.3-1.7)÷0.9....
计算. (253-159)×(27÷9) 6.8+2.37+7.63+4.2 11- 1 3 - 2 3 5 8 ÷[( 1 2 + 2 3 )× 4 7 0.6×(5.3-1.7)÷0.9.
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(1)(253-159)×(27÷9), =94×3, =282; (2)6.8+2.37+7.63+4.2, =(6.8+4.2)+(2.37+7.63), =11+10, =21; (3)11-
=11-(
=11-1, =10; (4)
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(5)0.6×(5.3-1.7)÷0.9, =0.6×3.6÷0.9, =2.16÷0.9, =2.4. |
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