Phiếu bài tập số 10 – Toán lớp 6 – THCS Dịch Vọng Hậu

PHIẾU BT SỐ 10: ÔN TẬP

Bài 40: Thực hiện phép tính:
a) $4^{10}{.8}^{15}$

b) $4^{15}{.5}^{30}$

c) ${27}^{16}:9^{10}$

d) $\frac{{72}^3{.54}^2}{{108}^4}$

e) $\frac{3^{10}.11+3^{10}.5}{3^0{.2}^4}$

f) $3^6:3^2+2^3{.2}^2$

g) $\left(39.42-37.42\right):42$

h) $36.333-108.111$

i) $136.68+16.272$

k) $800-\left\{50.\left[\left(18-2^3\right):2+3^2\right]\right\}$

l) $28.\left(231+69\right)+72.\left(131+169\right)$

m) $\left(27.45+27.55\right):\left(2+4+6+\dots +16+18\right)$

n) $2^3.15-\left[115-{\left(12-5\right)}^2\right]$

o) $100:\left\{250:\left[450-\left({4.5}^3-2^3.25\right)\right]\right\}$

Bài 41: Tìm số tự nhiên x, biết:
a) $100-7\left(x-5\right)=58$

b) $12\left(x-1\right):3=4^3+2^3$

c) $24+5x=7^5:7^3$

d) $5.\left(x-1\right)-206=2^4.4$

e) $5{\left(x-4\right)}^2-7=13$

f) $\left(x+1\right)+\left(x+2\right)+\dots ..+\left(x+30\right)=795$

g) $2^{x+3}-{3.2}^{x+1}=32$

h) $221-{\left(3x+2\right)}^3=96$

Bài 42: So sánh các lũy thừa sau:
a) ${13}^{14}v\stackrel{`}{a}{13}^{15}$

b) ${27}^{7}v\stackrel{`}{a}{81}^5$

c) $5^{54}v\stackrel{`}{a}{3}^{81}$

d) $2^{105}v\stackrel{`}{a}{5}^{45}$