Question

Thực hiện phép tính sau

a. 36 x 12 + 36 x 45 + 36 x 33..

b. 78 x 31 + 78 x 24 +78 x 17 + 22 x 72

c. ( 34 - 17 )² - 2³ x 3²

d. 11²⁰ : 11¹⁹ + 3⁰ x 3²

e. ( 2² )^{3 -} 3³

     ^{trình bày luôn nha}

Answer 1

36 x 12 + 36 x 45 + 36 x 33

= 36 x (12 + 45 + 33)

= 36 x 90

= 3240

b) 78 x 31 + 78 x 24 + 78 x 17 + 22 x 72

=78 x (31 + 24 + 17) + 22 x 72

= 78 x 72 + 22 x 72

= (78 + 22) x 72

= 100 x 72

= 7200

Answer 2

c) ( 34 - 17 )² - 2³ x 3²

\(=17^2-8.9\)

\(=289-72\)

\(=217\)

Answer 3

d)11²⁰ : 11¹⁹ + 3⁰ x 3²

\(=11^{20-19}+0\cdot9\)

\(=11+0\)

\(=11\)

Answer 4

a) 36 x ( 12+45+33 )

= 36 x 90

= 3240

b) 78 x ( 31+24+17 ) +22 x 72

=78 x 72 + 22 x 72

= 72 x (78 +22)

=72 x 100

= 7200

c) ( 34 - 17 )² -2³ x 3²

=13² - 2³ x 3²

= 13²- 72

=169 - 72

= 97

d)11²⁰:11¹⁹ + 3⁰ x 3²

=11¹+1 x 3²

=11 + 1 x 9

=20

e) (2²)³-3³

=2⁶-3³

= 64 - 27

=37

Answer 5

d) 11²⁰ : 11¹⁹ + 3⁰ x 3²

= 11 + 1 x 9

= 11 + 9

= 20

e) (2²)³ - 3³

= 4³ - 3³

= 64 - 27

= 37

Answer 6

e) ( 2² )^{3 -} 3³

\(=2^6-27\)

\(=64-27\)

\(=37\)

Answer 7

36 x 12 + 36 x 45 + 36 x 33

= 36 x (12 + 45 + 33)

= 36 x 90

= 3240

Answer 8

b) 78 x 31 + 78 x 24 + 78 x 17 + 22 x 72

=78 x (31 + 24 + 17) + 22 x 72

= 78 x 72 + 22 x 72

= (78 + 22) x 72

= 100 x 72

= 7200