Toán Lớp 6: 1) 134.11 + 90.134 − 134 2) 160 − 160: (5.8 − 8.3) 3) 5 mũ 2. 48 + 53. 5 mũ 2 − 25 4) 3 mũ 4 − 2. (53 − 2. 5 mũ 2) 5) 20 − [30 − (5 − 1

Question

Toán Lớp 6:  1) 134.11 + 90.134 − 134 2) 160 − 160: (5.8 − 8.3) 3) 5 mũ 2. 48 + 53. 5 mũ 2 − 25 4) 3 mũ 4 − 2. (53 − 2. 5 mũ 2) 5) 20 − [30 − (5 − 1) mũ 2] 6) 100:{250:[325 − (4.5 mũ 3 − 2 mũ 2. 50)]}

hongocha12 · Answer

1) 134.11 + 90.134 - 134   = 134. ( 11 + 90) - 134   = 134. 101-134   =  13534 - 134     = 13400     2) 160 &minus; 160: (5.8 &minus; 8.3)     = 160 - 160: ( 40-24)     = 160 - 160: 16     = 160 - 10     = 150     3) 5 mũ 2. 48 + 53. 5 mũ 2 &minus; 25      = 5 mũ 2 . ( 48 + 53 - 25)     = 5 mũ 2 . 76     = 10 . 76     = 760     4) 3 mũ 4 &minus; 2. (53 &minus; 2. 5 mũ 2)     = 3 mũ 4 - 2. ( 53 - 2. 10)     = 3 mũ 4 - 2. ( 53 - 20)     = 3 mũ 4 - 2. 33     = 3 mũ 4 - 66     = 81 - 66     = 15     5) 20 &minus; [30 &minus; (5 &minus; 1) mũ 2]     = 20 - [ 30 - 4 mũ 2]     = 20 - [ 30 - 16 ]     =20 - 14     = 6     6) 100:{250:[325 &minus; (4.5 mũ 3 &minus; 2 mũ 2. 50)]}     = 100: {250:[325 - ( 4. 125 - 4. 50)]}     = 100: {250:[325 - ( 500 - 200 )]}     = 100: {250:[325 - 300]}     = 100: {250:  25 }     = 100: 10     = 10     mong chọn cho c&acirc;u trả lời hay nhất

ngoclankhue · Answer

Giải đáp+Lời giải và giải thích chi tiết:

1) 134 . 11 + 90 . 134 − 134

= 134 . 11 + 90 . 134 − 134 . 1

= 134 . ( 90 + 11 – 1 )

= 134 . 100

= 13400

2) 160 − 160 : (5.8 − 8.3)

= 160 − 160 : ( 40 − 24 )

= 160 – 160 : 16

= 160 – 10

= 150

3) $5^{2}$ . 48 + 53 . $5^{2}$ – 25

= 25 . 38 + 53 . 25 – 25 . 1

= 25 . ( 38 + 53 – 1 )

= 25 . 90

= 2250

4) $3^{4}$ – 2 . ( 53 – 2 . $5^{2}$ )

= $3^{4}$ – 2 . ( 53 – 2 . 25 )
= $3^{4}$ – 2 . ( 53 – 50 )
= $3^{4}$ – 2 . 3
= 81 – 2 . 3
= 81 – 6
= 75

5) 20 − [30 − (5 − 1$)^{2}$ ]

= 20 – [ 30 – $4^{2}$ ]

= 20 – [ 30 – 16 ]

= 20 – 14

= 6

6) 100 : { 250 : [ 325 − ( 4 . $5^{3}$ − $2^{2}$ . 50 ) ] }

= 100 : { 250 : [ 325 − ( 4 . 125 − 4 . 50 ) ] }

= 100 : { 250 : [ 325 − ( 500 − 200 ) ] }

= 100 : { 250 : [ 325 − 300 ] }

= 100 : { 250 : 25 }

= 100 : 10

= 10