Grade 1 Calculation Questions Speed!! High Score !! ）

Question 1: Multiply or negative the three negative signs in the multiplier part, change the positive sign in front to a negative sign, and change all the numbers in the back to a positive sign, and after multiplication, it is 3, and the result of the whole formula is 8-3 5

Question 2: In the last parentheses are -1 and 1 4, two negative signs in the whole formula, which are positive after multiplication, and the negative sign in the formula is changed to a positive sign, which is equal to 5 2 after multiplication

Solution: Original =

8-4x3/4

Solution: Original = 3 2x11 3x5 4

11/2x5/4

The format is absolutely standard, and they are all from the past.

8+ (Multiply with -8, negative or negative is positive, so it will be 4.) And 4x-3 4 denominator is approximated, because the fraction is negative, so it is -3 and 8+(-3)=8-3=5

3/2）x(+1 1/3)x(-1-1/4)=（-3/2）x(+1 1/3)x(-3/4)=（-3/2）x（-11/4）=33/8

It's pretty much the same as the one above.

The first, solution, is based on the original formula = 8-4 (-3 4).

Second. Solution: Original formula = (-2 3) (3 4) (4 5).

8.Because ab=ac, so abc is isosceles, and because ad is the middle line, there is a theorem that the middle line on the bottom edge of the isosceles triangle is also the angle bisector and the middle perpendicular line, so ad bc three variations are equal, these 8 triangles are congruent triangles, then there is angle abc = angle dcb and ab cd, then there is angle abc + dcb = 8abc =

(1) <=19 <= x<=50 to get x<=38

2) y=4x+3(50-x)=x+150x is the smallest, y is the smallest, so x=0 is the most economical.

Because the shelf capacity remains the same, the thickness of the books multiplied by the number is equal to the capacity. So you can put down 135 copies.

1)1/4x-1/2=3/4

2)7x-5/4=3/8

3)2x-1/6=5x+1/8

4)1/2x-7=9x-2/6

5)1/5x-1/2(3-2x)=1

6)2x+1/3-5x-1/6+1

7)1/7(2x+14)4-2x

8) 3 10 (200 + x) - 2 10 (300-x) = 300 times 9 25 To answer, please click.

Answer: +1 = x-1

5-3x/2>=<3-5x/2>

x+-<2x-3/2>=1

2(x+3)/5>=<3/2>x-<2(x-7)/3>y-<>=2-<>

"Balance of Years" = <>

1 3>x-<1 6>(x-1) = <2 3> (x-<1 2>) > dispersion = 3

To answer, click here.

1)3-x/2=x+4/3

2)x+2/5=x/4

3)1/4(x+1)=1/3(x-1)

4)2x-1/3=x+2/4-1

5) 1 2 (x-1) = 2-1 5 (x+2) To answer, please click.

Hope it helps,