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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 5: a) 7,69 x 50; b) 12,6 x 800; c) 12,82 x 40; d) 82,14 x 600

Toán Lớp 5: a) 7,69 x 50; b) 12,6 x 800; c) 12,82 x 40; d) 82,14 x 600

Comments ( 2 )

  1. $\text{ a) 7,69 × 50 = 7,69 × 5 × 10 = 38,45 × 10 = 384,5 }$
    $\text{ b) 12,6 × 800 = 12,6 × 8 × 100 = 100,8 × 100 = 10 080 }$
    $\text{ c) 12,82 × 40 = 12,82 × 4 × 10 = 51,28 × 10 = 512,8 }$
    $\text{ d) 82,14 × 600 = 82,14 × 6 × 100 = 492,84 × 100 = 49 284 }$
     

  2. $a) 7,69 \times 50 = 384,5 {}$
    $b) 12,6 \times 800 = 10080 ^{}$
    $c) 12,82 \times 4 = 512,8^{}$
    $ d) 82,14 \times 600 = 49284 ^{}$

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222-9+11+12:2*14+14 = ? ( )

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