Dierections:Use the distributive property to simplify each expresion.
1) 9x (5+3) x 4 - 6=
2) (8+7) x 3 x 2=
Use the disruptive property to multiply mentaly!
1) 7x 57=
2) 8x 97=
3)5x 402=
4) 8x 103=
5) 9x 213=
6) 7x 49=
GOOD LUCK TO ALL REMEMBER I WILL GIVE U TEN POINTS IF U R RIGHT SEE YA!!!!!!!!!!!
2007-08-22 10:15:57 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1)282
2)90
1)399
2)776
3)2010
4)824
5)1917
6)343
Its a good idea for answers 2 do ur homework for you lol
2007-08-26 02:57:40 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Dierections:Use the distributive property to simplify each expresion.
1. (40x + 27x) * 4 - 6
(67x) * 4 - 6
268x - 6
2. (24+ 21) * 2
45 * 2
90
Use the disruptive property to multiply mentaly!
1. (7 * 50) + (7 * 7)
350 + 49
399
2. (8 * 90) + (8 * 7)
720 + 56
776
3. (5 * 400) + (5 * 2)
2000 + 10
2010
4. (8 * 100) + (8 * 3)
800 + 24
824
5. (9 * 200) + (9 * 10) + (9 * 3)
1800 + 90 + 27
1917
6. (7 * 40) + (7 * 9)
280 + 63
343
2007-08-22 10:25:37 · answer #2 · answered by Anonymous · 0⤊ 1⤋
1) 9x(5+3)x4-6=
=9x(4x5+4x3)-6=
=9x(20+12)-6=
=9x20+9x12-6=
=180+108-6=282
2)(8+7)x3x2=
=(8*3+7*3)*2
=(24+21)*2=
=24*2+21*2=
=48+42=90
1) 7x57=7x(50+7)=
=7x50+7x7=
=350+49=399
8x97=8x(100-3)=
=8x100-8x3=
=800-24=776
5x402=5x(400+2)=
=5x400+5x2=
=2000+10=2010
8x103=8x(100+3)=
=8x100+8x3=
=800+24=824
9x213=9x(200+13)=
9x200+9x13=
=1800+9x(10+3)=
=1800+9x10+9x3=
=1800+90+27=1917
7x49=7x(50-1)=
=7x50-7x1=
=350-7=343
2007-08-22 10:29:02 · answer #3 · answered by SrdjanNS 2 · 0⤊ 0⤋
9x(5+3) x 4-6=282x
(8+7) x 3 x 2=90
do things in () 1st exponents next the x division the + & -
2007-08-22 10:51:38 · answer #4 · answered by kaitlin789 1 · 0⤊ 0⤋
1= 282
2= 90
2007-08-22 10:20:28 · answer #5 · answered by Anonymous · 0⤊ 0⤋
1) 288x - 6
2) 90
"Disruptive" property?
2007-08-22 10:18:03 · answer #6 · answered by Anonymous · 0⤊ 1⤋
OK, done. I did them mentally, just like the problem says.
2007-08-22 10:20:04 · answer #7 · answered by Anonymous · 0⤊ 1⤋
Me M , Sorry son you have to work it out yourself !
2007-08-22 10:26:12 · answer #8 · answered by lonewolf 7 · 0⤊ 1⤋
Sorry. i suck a s s at math.
2007-08-22 10:23:51 · answer #9 · answered by Anonymous · 0⤊ 1⤋