急！！！这4题哪么简便计算？
2个回答
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①
=5×7.26÷1.2
=7.26×25÷6
=25×1.21
=30.25
②
=4×3.6+3.6
=5×3.6
=18
③
=4.25×0.4 ×101-1.7
=1.7×101-1.7
=1.7×(101-1)
=170
④
=2.74×10.1
=2.74×10+2.74×0.1
=27.4+0.274
=27.674
刘老师倾情为您解答。。。............
=5×7.26÷1.2
=7.26×25÷6
=25×1.21
=30.25
②
=4×3.6+3.6
=5×3.6
=18
③
=4.25×0.4 ×101-1.7
=1.7×101-1.7
=1.7×(101-1)
=170
④
=2.74×10.1
=2.74×10+2.74×0.1
=27.4+0.274
=27.674
刘老师倾情为您解答。。。............
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