Toán Lớp 4: 19000dm vuông …………… cm vuông
100500 m vuông …………….dam vuông
help me !!!!
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Toán Lớp 4: 19000dm vuông …………… cm vuông
100500 m vuông …………….dam vuông
help me !!!!
Comments ( 2 )
$19000$ dm² = ………… cm²
$100500$ m² = ………….. dam²
giải thích :
$1$ dm² = $100$ cm²
$19000$ dm² = $1900000$ cm²
$1$ m² = 0,01 dam²
$100500$ m² = $1005,00$ dam²
trả lời :
$19000$ dm² = $1900000$ cm²
$100500$ m² = $1005,00$ dam²
19 000dm^2 = 1 900 000cm^2
<=> 1dm^2 = 100cm^2
=> 19 000 xx 100 = 1 900 000
______________________________________
100500m^2 = 1005 dam^2
<=> 1m^2 = 0,01 dam^2
=> 100500 xx 0,01 = 1005,00 hay 1005
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