HannahSponge

Hannah Bell

Wednesday, September 24 Page 85 (1-3, 5-10)

1.) (-1/3) + (2/9)     (-3/9) + (2/9)               =-1/9 2.) -3-17= -20 3.) 5-5+5= 5 5.) 2•4(-3•-5)=2•-12•-20= 120 6.) -4--5=1 7.) (2•4^2)/(4•4)= -1.6 8.) t= temp change   expression--   -5+t temp=8 degrees F 9.) 8x-12 10.) 49t

Thursday, September 25 NO CLASS

Friday, September 26 Page 91 (1-4)

1.) yes 2.) no 3.) no 4.) no

Monday, September 29

Associative Property- The associative property changes the grouping in an equation but still gets the same answer. ex: (a+b)+c=(a+c)+b

Commutative Property- The commutative property is adding of multiplying any numbers and still getting the same answer. ex: a+b=b+a a•b=b•a

Tuesday, September 30 TEST

Wednesday, October 1 Pg. 116 (15-18), 1

15.) 14k²-(-2k²)= 16k² 16.) 4xy+9xy=13xy 17.) 6t+2-4t=2t+2 18.) 9x-4+3x= 12x-4 1.) 15/7+-3/6= 90/42+-21/42= 69/42= 23/14

Thursday, October 2 NO CLASS

Friday, October 3 pg 119 (1-9 check skills) 1.) x-5=14      +5     +5     x=19               19-5=14

2.) x+3.8=9       -3.8     -3.8     x=5.2                5.2+3.8=9

3.) -7+x=7     +7       +7        x=14             -7+14=7

4.) x-13=20        +13   +13      x=33                33-13=20

5.) x/4=8        •4   •4      x=32               32/4=8

6.) 3x=9     ÷3   ÷3         x=3              3•3=9 7.) 10x=2 ÷10  ÷10       x=1/5               10•1/5=2 8.) 2/3x=-6       •3       •3            2x=-18            ÷2     ÷2       x=9                2/3•9=-6 9.) x+2 3/4=6 1/2 x=3 3/4

Monday, October 6 Pg. 122 (40-43)

40.) 8+c/-4=-6      -8               -8              c/-4=-14                •-4    •-4              c=56         8+56÷-4=-6

41.) 7-3k=-14      -7         -7        -3k=-21       ÷-3   ÷-3       k=7            7-3•7=-14 42.) 6-2p=14 -6        -6      2p=8 ÷2  ÷2     p=4            6-2• 43.) -y/2+14=-1               -14     -14        -y/2=-15           •2      •2         -y=-30         ÷-1  ÷-1        y=30                  -30/2=14=-1