Toán Lớp 7: Tính nhanh nếu có thể:
a, $\dfrac{4}{9}$ . $\dfrac{13}{3}$ – $\dfrac{4}{3}$ . $\dfrac{40}{9}$
b, ( $10\dfrac{3}{9}$ + $3\dfrac{3}{5}$ ) – $6\dfrac{3}{9}$
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Toán Lớp 7: Tính nhanh nếu có thể:
a, $\dfrac{4}{9}$ . $\dfrac{13}{3}$ – $\dfrac{4}{3}$ . $\dfrac{40}{9}$
b, ( $10\dfrac{3}{9}$ + $3\dfrac{3}{5}$ ) – $6\dfrac{3}{9}$
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