Åk 6–9
 
English/Русский
4.6 Exercises – Calculating with Algebraic Expressions
1. 5a3 · 2a4 = 10a7. Show the calculation with only the:
a) sign
b) coefficient
c) variable
d) exponent
 
 
2. 48x5 ÷ 6x2 = 8x3.  Show the calculation with only the:
a) sign
b) coefficient
c) variable
d) exponent
 
 
3. -56n2 ÷ 8n5 = -7n-3. Show the calculation with only the:
a) sign
b) coefficient
c) variable
d) exponent
 
 
4. (-7c5)(2c4) = -14c9. Show the calculation with only the:
a) sign
b) coefficient
c) variable
d) exponent
 
 
5. (24z2) ÷ (-4z) = -6z. Show the calculation with only the:
a) sign
b) coefficient
c) variable
d) exponent
 
 
6. Which answer is correct?
a) 3a + 4a + 2a =
  9a3   or    10a  
 
b) 5x3 - 9x3 + 3x3 =
  -x3   or    -15x3  
 
c) -2d + 3d + 7d - 10 d =
  -2d   or    18d  
 
d) 6y2 - 7y2 + 2y2 - 5y2 =
  20y2   or    -4y2  
 
e) 11c2h3 - 2c2h3 + 9c2h3 - 15c2h3 =
  3c2h3   or   3c3h2  
 
f) c - c2+ 2c2 - 3 c =
  c4 - 4c2  or    c2 - 2c  
 
g) z + z2- z3 - z2 - z + 3z3 =
  2z3   or    4z4+ z2