Question

ПОМОГИТЕ РЕШИТЬ ПРИМЕРЫ. 170+640:8×4-0:7×2= 450÷5×3+160÷2×5-70×4= 1000-60×2:3×9-60×9= 270-40×3+5×4= 80×7-160:4×7-190= 480:8+320-540:9+70×8= 400-720:9+40×4= 30×9+60×7-640:8+200= 810÷9×8-30×8:4= 80×2+350:5-40×5530:9+(540-470)×6= 320:8×7+9×(240-160)=

Answer 1

170+640:8*4-0:7*2=490
450:5*3+160:2*5-70*4=410
270-40*9+5*4=-110
80*7-160:4*7-190=370

Answer 2

170+320-0=490, 270+400-280=390,1000-360-540=100,270-120+20=170,540-280-190=70,60+320-60+560=880,400-80+160=480,270+420-80+200=810,720-60=660, -23927

Answer 3

1. 170 + 640 : 8 × 4 - 0 : 7 × 2 =

First, we need to perform the division and multiplication operations, working from left to right:

640 ÷ 8 = 80 80 × 4 = 320 0 ÷ 7 = 0 0 × 2 = 0

Now, we can substitute these values into the original expression and simplify:

170 + 320 - 0 = 490

Therefore, the answer is 490.

2. 450 ÷ 5 × 3 + 160 ÷ 2 × 5 - 70 × 4 =

We need to follow the order of operations, which is Parentheses, Exponents, Multiplication and Division (performed left to right), and Addition and Subtraction (performed left to right). There are no parentheses or exponents in this expression, so we can begin with multiplication and division:

450 ÷ 5 = 90 90 × 3 = 270 160 ÷ 2 = 80 80 × 5 = 400 70 × 4 = 280

Now, we can substitute these values into the original expression and simplify:

270 + 400 - 280 = 390

Therefore, the answer is 390.

3. 1000 - 60 × 2 : 3 × 9 - 60 × 9 =

Again, we need to follow the order of operations:

60 × 2 = 120 3 × 9 = 27 120 ÷ 27 = 4.44 (rounded to two decimal places) 60 × 9 = 540

Now, we can substitute these values into the original expression and simplify:

1000 - 4.44 - 540 = 455.56 (rounded to two decimal places)

Therefore, the answer is 455.56.

4. 270 - 40 × 3 + 5 × 4 =

We need to follow the order of operations:

40 × 3 = 120 5 × 4 = 20

Now, we can substitute these values into the original expression and simplify:

270 - 120 + 20 = 170

Therefore, the answer is 170.

5. 80 × 7 - 160 : 4 × 7 - 190 =

We need to follow the order of operations:

160 ÷ 4 = 40 40 × 7 = 280

Now, we can substitute these values into the original expression and simplify:

80 × 7 - 280 - 190 = -30

Therefore, the answer is -30.

6. 480 : 8 + 320 - 540 : 9 + 70 × 8 =

We need to follow the order of operations:

480 ÷ 8 = 60 540 ÷ 9 = 60 70 × 8 = 560

Now, we can substitute these values into the original expression and simplify:

60 + 320 - 60 + 560 = 880

Therefore, the answer is 880.

7. 400 - 720 : 9 + 40 × 4 =

We need to follow the order of operations:

720 ÷ 9 = 80 40 × 4 = 160

Now, we can substitute these values into the original expression and simplify:

400 - 80 + 160 = 480

Therefore, the answer is 480.

8. 30 × 9 + 60 × 7 - 640 :