Toán Lớp 4: 5/7 x (1/1×5 – 1/36×40)
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Toán Lớp 4: 5/7 x (1/1×5 – 1/36×40)
Mong được những người giỏi giang giúp đỡ
Comments ( 2 )
$\dfrac{5}{7}$ × ( $\dfrac{1}{1}$ × 5 – $\dfrac{1}{36}$ × 40 )
= $\dfrac{5}{7}$ × ( $\dfrac{5}{1}$ – $\dfrac{40}{36}$ )
= $\dfrac{5}{7}$ × ( 5 – $\dfrac{10}{9}$ )
= $\dfrac{5}{7}$ × $\dfrac{35}{9}$
= $\dfrac{25}{9}$
$\text{#lknhatminh0322}$
5÷7 × (1÷1×5 – 1÷36×40) = 2,77777778
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