第一大题要过程谢谢了
2个回答
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37×101
=37×(100+1)
=37×100+37×1
=3737
12×(1/4+5/6-1/3)
=12×1/4+12×5/6-12×1/3
=3+10-4
=9
2.5÷5/7×2/7
=2.5×7/5×2/7
=2.5×2/5
=1
12.5×8÷12.5×8
=100÷12.5×8
=8×8
=64
12.7-3.6-5.4
=12.7-(3.6+5.4)
=12.7-9
=3.7
8/9×(3/4-7/16-1/4)
=8/9×3/4-8/9×7/16-8/9×1/4
=2/3-7/18-2/9
=1/18
=37×(100+1)
=37×100+37×1
=3737
12×(1/4+5/6-1/3)
=12×1/4+12×5/6-12×1/3
=3+10-4
=9
2.5÷5/7×2/7
=2.5×7/5×2/7
=2.5×2/5
=1
12.5×8÷12.5×8
=100÷12.5×8
=8×8
=64
12.7-3.6-5.4
=12.7-(3.6+5.4)
=12.7-9
=3.7
8/9×(3/4-7/16-1/4)
=8/9×3/4-8/9×7/16-8/9×1/4
=2/3-7/18-2/9
=1/18
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展开全部
1. 37×101=37×(100+1)=3700+37=3737
2. 12×(1/4+5/6-1/3)
=12×1/4+12×5/6-12×1/3
=3+10-4
=9
2. 12×(1/4+5/6-1/3)
=12×1/4+12×5/6-12×1/3
=3+10-4
=9
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