Quiz1

Negative

100

calculate

-19-3=

-22

200

-11+11-20-20=

-40

300

2x(-3-5)+3x(-2)=

-22

400

-5x(-2)²+(-5-15)x(-2)

20

500

-1²x(-2)²+(-5-5)-(-2)²

-18

Power

100

(-1)⁴x5

5

200

-1+2x(-2)²-3

0

300

-1⁴x(-3)²+2³-2²

-5

400

-1²+(1-3)³-2x(-2)²+1

-16

500

(-2)³+(-3)x[(-1)³+2]-(-3)²x(-2)

7

algebraic

100

simplify:

3x-5y+6x

9x-5y

200

-3x+25y-13x-5y

-16x+20y

300

-5(2x-3y)+3x

-7x+15y

400

5-3(x+2y)-17x

-20x-6y+5

500

5x-(3x-7)-2x-10

-3

rounding off

100

Convert the numbers to standard form

13000000

1.3x10⁷

200

Express the following as an ordinary

1.67x10⁶

1670000

300

Round 427670 to nearest 100

427700

400

Round34.10357829 to 2 decimal places

34.10

500

Round 427670 to 3 significant figure

427000

Equations

100

solve equation:

4x+5=25

x=5

200

solve equation:

4(5-2x)=12

x=1

300

2(x+5)+2x=30

x=5

400

-3(x+2)+4=2x+8

x=2

500

3x-(4x+5)=8(x+5)

x=