3.14乘8.4加31.4乘3.7减0.314乘210

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3.14乘8.4加31.4乘3.7减0.314乘210

3.14乘8.4加31.4乘3.7减0.314乘210
3.14乘8.4加31.4乘3.7减0.314乘210

3.14乘8.4加31.4乘3.7减0.314乘210
3.14乘8.4加31.4乘3.7减0.314乘210
=3.14×8.4+31.4×3.7-0.314×210
=3.14×8.4+3.14×37-3.14×21
=3.14×(8.4+37-21)
=3.14×24.4
=76.616

=3.14*8.4+3.14*37-3.14*21
=3.14*(8.4+37-21)
=3.14*24.4
=