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		<h1>Hướng dẫn giải bài tập SGK Toán lớp 5 trang 106&#x3A; Luyện tập chung</h1>
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			Hướng dẫn giải bài tập SGK Toán lớp 5 trang 106: Luyện tập chung
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			<p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">Câu 1:</strong>&nbsp;Cho hình tam giác có diện tích 5/8 m<sup style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">2</sup>&nbsp;và chiều cao 1/2m. Tính độ dài đáy của hình tam giác đó.</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">Câu 2</strong>: Một chiếc khăn trải bàn hình chữ nhật có chiều dài 2m và chiều rộng 1,5m. ở giữa khăn người ta thêu họa tiết trang trí hình thoi có các đường chéo bằng chiều dài và chiều rộng hình chữ nhật. Tính diện tích khăn trải bàn và diện tích hình thoi.</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><img alt="" height="146" src="https://sachgiai.com/uploads/news/2018_01/giai-bai-tap-trang-106-sgk-toan-5-luyen-tap-chung-a.jpg" width="258" /></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">Câu 3</strong>:&nbsp;Một sợi dây nối 2 bánh xe ròng rọc. Đường kính của bánh xe có độ dài 0,35m. Hai trục cách nhau 3,1 m Tính độ dài sợi dây.</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><img alt="" height="73" src="https://sachgiai.com/uploads/news/2018_01/giai-bai-tap-trang-106-sgk-toan-5-luyen-tap-chung-b.jpg" width="495" /></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><span style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit; text-decoration-line: underline;"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">HƯỚNG DẪN GIẢI</strong></span></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">Câu 1:</strong></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Độ dài đáy của hình tam giác là:</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><img alt="" height="55" src="https://sachgiai.com/uploads/news/2018_01/giai-bai-tap-trang-106-sgk-toan-5-luyen-tap-chung-c.jpg" width="132" /></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Đáp số: 5/2 (m)</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">Câu 2:</strong></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Diện tích khăn trải bàn là: 2 × 1,5 = 3 (m<sup style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">2)</sup></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Diện tích hình thoi là: 2 × 1,5 : 2 = 1,5 (m<sup style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">2</sup>)</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;"><strong style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-stretch: inherit; font-size: inherit; line-height: inherit; font-family: inherit;">Câu 3:</strong></p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Độ dài của sợi dây bằng tổng độ dài của hai nửa đường tròn cộng hai lần khoảng cách giữa hai&nbsp;trục.</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Chu vi của hình tròn với đường kính 0,35 là:</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">0,35 × 3,14 = 1,099 (m)</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Độ dài sợi dây là:</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">1,099 + 3,1 × 2 = 7,299 (m)</p><p style="margin: 0px; padding: 0px 0px 10px; border: 0px; font-variant-numeric: inherit; font-stretch: inherit; font-size: 15px; line-height: inherit; font-family: arial; color: rgba(0, 0, 0, 0.87); text-align: justify;">Đáp số:&nbsp;7,299 (m)</p>
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