- 3

3

- 33

33

 $\left|−3+5\right|=∣−3∣+∣5∣$  

 $\left|\left(-5\right)+\left(-3\right)\right|=\left|-5\right|+\left|-3\right|$  

 $\left|-4-2\right|=\left|-4\right|-\left|2\right|$  

 $\left|-6+7\right|=\left|-6\right|+\left|7\right|$  

-60

60

-120

120

x + ( - 5 ) = - 11

x + (- 4 ) = - 10

x – (- 9) = 3

x + (-2) = 8

17

-17

8

-8

( 5 + 6 ) + 7 = 7 + ( 5 + 6)

( 8 + 9 ) + 10 = ( 9 + 8) + 10

( 3 × 4 ) × 5 = 3 × ( 4 × 5 )

( 6 × 7 ) × 8 = 6 × ( 8 × 7 )

จำนวนตรงข้ามของ - 25 คือ – ( - 25 )

 $\left|8\right|+\left|-8\right|+\left|-15\right|=15$  

 $\left|-10\right|<\left|-15\right|<\left|-3\right|$  

 $\left|-14\right|>\left|12\right|>\left|-20\right|$  

1

-1

49

-49

104

58

-104

-58