Question

1) 2 1/2* 6+3 1/3 2) 2 1/2*2 + 3 1/3*3 3) 17:(4 1/3 - 3 1/3) 4) (15 - 4 1/8) * ( 3 14/15 - 2 3/5) ПОМОГИТЕ РЕШИТЬ! ДАМ 10 БАЛЛОВ! ПРШУ ПОМОЧЬ! ЭТО 6 КЛАСС. цИФРЫ С ЧЕРТОЧКАМИ,ЭТО ДРОБИ

Answer 1

1) 2 1/2* 6+3 1/3= 5/2*6+10/3=30/2+10/3=90/6+20/6=110/90=11/9=2 2/9

2) 2 1/2*2 + 3 1/3*3=
5/2*2+20/3*3=5+20=25

3) 17:(4 1/3 - 3 1/3)=
17÷(13/3-10/3)=17÷3/3=17÷1=17

4) (15 - 4 1/8) * ( 3 14/15 - 2 3/5)=
10 7/8*(59/15-13/5)=10 7/8*(59/15-39/15)=10 7/8*20/15=87/8*4/3=29/2=14,5

Answer 2

2 1/2*6+3 1/3=5/2*6+3 1/3=15+3 1/3=18 1/3
2 1/2*2+3 1/3*3=5+10=15
17:(4 1/3-3 1/3)=17:1=17
(15-4 1/8)*(3 14/15-2 3/5)=10 7/8*1 1/3=14 1/2

Answer 3

Calculation

To solve the given expression, let's break it down step by step:

1) 1 + 2 + 1/2 * 6 + 3 + 1/3 + 2

First, let's simplify the expression within the parentheses:

1/2 * 6 = 3

Now, we can substitute the simplified expression back into the original expression:

1 + 2 + 3 + 3 + 1/3 + 2

Next, let's simplify the remaining fractions:

1/3 = 0.3333 (rounded to four decimal places)

Now, we can substitute the simplified fraction back into the expression:

1 + 2 + 3 + 3 + 0.3333 + 2

Finally, let's add all the numbers together:

1 + 2 + 3 + 3 + 0.3333 + 2 = 11.3333 (rounded to four decimal places)

Therefore, the value of the expression 1 + 2 + 1/2 * 6 + 3 + 1/3 + 2 is approximately 11.3333.

2) 17 : (4 + 1/3 - 3 + 1/3) + 4

First, let's simplify the expression within the parentheses:

4 + 1/3 - 3 + 1/3 = 1/3

Now, we can substitute the simplified expression back into the original expression:

17 : 1/3 + 4

Next, let's simplify the remaining fraction:

1/3 = 0.3333 (rounded to four decimal places)

Now, we can substitute the simplified fraction back into the expression:

17 : 0.3333 + 4

Finally, let's perform the division and addition:

17 : 0.3333 + 4 = 51 + 4 = 55

Therefore, the value of the expression 17 : (4 + 1/3 - 3 + 1/3) + 4 is 55.

3) (15 - 4 1/8) * (3 14/15 - 2 3/5)

First, let's simplify the expressions within the parentheses:

15 - 4 1/8 = 10 7/8

3 14/15 - 2 3/5 = 1 11/15

Now, we can substitute the simplified expressions back into the original expression:

(10 7/8) * (1 11/15)

Next, let's convert the mixed numbers to improper fractions:

10 7/8 = 87/8

1 11/15 = 26/15

Now, we can substitute the simplified fractions back into the expression:

(87/8) * (26/15)

Finally, let's perform the multiplication:

(87/8) * (26/15) = 2262/120 = 18.85 (rounded to two decimal places)

Therefore, the value of the expression (15 - 4 1/8) * (3 14/15 - 2 3/5) is approximately 18.85.