giúp mình nhé các bạn

thực hiện hép tính sau

\(\dfrac{3}{8}+\dfrac{5}{8}\)

\(\dfrac{-1}{2}+\dfrac{5}{7}\)

\(\dfrac{9}{11}.\dfrac{5}{8}\)

\(\dfrac{3}{4}:\dfrac{4}{3}\)

đổi phân số \(\dfrac{7}{3}\)ra hỗn số

viết hỗn số \(4\dfrac{3}{7}\)

tính \(1\dfrac{3}{4}+3\dfrac{5}{9}\)

tính \(1\dfrac{5}{4}-2\dfrac{7}{4}\)

xét bài toán sau : \(\dfrac{3}{5}\)số học sinh lớp 6a là 27 bạn. Hỏi lớp 6a có bao nhiêu học sinh ?

BT4

a) vẽ tam giác ABC biết độ dài các cạnh là : AB = 3cm ; BC= 4cm; AC= 5cm

b) đo góc B của tam giác ABC

giúp mình đi

Các câu hỏi liên quan

Ba lớp 6A, 6B, 6C phải trồng một số cây quanh trường nhân ngày kỉ niệm sinh nhật Bác 19https:https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.LogaVN.nethttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.imagehttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.faqhttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.data2https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.775362_.5. Lớp 6A trồng được 1https:https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.LogaVN.nethttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.imagehttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.faqhttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.data2https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.775362_.4 số cây , lớp 6B trồng được 2https:https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.LogaVN.nethttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.imagehttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.faqhttps:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.data2https:https://LogaVN.net/image/faq/data2/710107_.https://LogaVN.net/image/faq/data2/710107_.LogaVN.nethttps://LogaVN.net/image/faq/data2/710107_.imagehttps://LogaVN.net/image/faq/data2/710107_.faqhttps://LogaVN.net/image/faq/data2/710107_.data2https://LogaVN.net/image/faq/data2/710107_.185200_.775362_.5 tổng số cây, lớp 6C trồng nốt 105 cây còn lại.

a. Tính tổng số cây

b.Tính số cây trông được của lớp 6A và tỷ số phần trăm số cây trồng được lớp 6 với tổng số cây

HELP ME