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Chủ tịch Hội Đồng Nước Việt Nam: Phạm Thiên An

a)

$8.5^2-189:3^2$

$=8.25-189:9$

$=200-21$

$=179$

b)

$200:\left\lbrack117-\left(23-6\right)\right\rbrack$

$=200:\left(117-17\right)$

$=200:100$

$=2$

c)

$31.65+31.35-600$

$=31.\left(65+35\right)-600$

$=3100-600$

$=2500$

d)

$2^5.3+4.\left\lbrack\left(26-22\right)^2:4+6\right\rbrack-76^0$

$=32.3+4.\left(4^2:4+6\right)-1$

$=96+4.\left(4+6\right)-1$

$=96+4.10-1$

$=96+40-1$

$=135$

e)

$160-\left(4.5^2-3.2^3\right)$

$=160-\left(4.25-3.8\right)$

$=160-\left(100-24\right)$

$=160-76$

$=84$

f)

$\left\lbrack36.4-4.\left(82-7.11\right)^2\right\rbrack:4-2022^0$

$=\left\lbrack36.4-4.\left(82-77\right)^2\right\rbrack:4-1$

$=\left(144-4.5^2\right):4-1$

$=\left(144-4.25\right):4-1$

$=\left(144-100\right):4-1$

$=44:4-1$

$=11-1$

$=10$.