圆周率口算卡.docx
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圆周率口算卡
3.14×5
=15.70
3.14×4
=12.56
3.14×6
=18.84
3.14×7
=21.98
3.14×8
=25.12
3.14×9
=28.26
3.14×3
=9.42
3.14×2
=6.28
3.14×22
=12.56
3.14×32
=28.26
3.14×42
=50.24
3.14×52
=78.5
3.14×62
=113.04
3.14×72
=153.86
3.14×82
=200.96
3.14×92
=254.34