乘法口诀

.1×1=1.2×2=4.4×4=16.6×6=36. .1×2=2.2×4=8.4×5=20.6×7=42. .1×3=3.2×5=10.4×6=24.6×8=48. .1×4=4.2×6=12.4×7=28.6×9=54. .1×5=5.2×7=17.4×8=32.7×7=49. .1×6=6.2×8=16.4×9=36.7×8=56. .1×7=7.2×9=18.5×5=25.7×9=63. .1×8=8.3×3=9.5×6=30.8×8=64. .1×9=9.3×4=12.5×7=35.8×9=72.
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