8×4=32→.8×4=3.2, ①4.1×4=16.4, ②6×3.2=19.2, ③7×2.5=17.5, ④1.7×8=13.6, ⑤5×3.9=19.5, ㉠.375×1=37.5, ㉡.375×.1=3.75, ㉢.375×.1=37.5, 48에서소수점~) 등의 수학 소수 곱셈 학습자료
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