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CF3i - Simplifying Expressions (Subtraction & Division)
Συνεισφορά από: Heuring
  Changing "-" to "+-".
Then distribute or share
 the "-" into the "(        )"
Option #1
There are two approaches to simplify expressions
                     involving subtraction:
Try out the Plus-Change-Change rule by dragging
and dropping your selections from left to right
Option #2
            Use the
"Plus-Change-Change"
               rule
(4m + 3) -  (   m +  5)
(4m + 3)     (   m +  5)
+
?
-
?
-
?
               The
"Plus-Change-Change"
               rule
After applying the P-C-C rule, drop the parenthesis
  and combine like terms to complete the problem
Most students favor the "Plus-Change-Change Rule.

(4m + 3) + ( -m + -5)
 4m + 3  +   -m + -5
               +
Type in your answers
(4m + 3) -  (   m +  5)
(4m + 3) + ( -m + -5)
(9n + 10) - (  3n +  7)

(9n + 10)    (  3n +  7) 
Now drop the parenthesis and combine like terms
      Now let's see if we can put it together.
Completely simplify the following expression
Drag & drop you selection, then type in your answers
Apply the Plus-Change-Change Rule
+
?
+
-
?
-
?
(15n + 1) - (  5n +  8)

(15n + 1)    (  5n +  8)
Now drop the parenthesis and combine like terms
                Let's try another one.
Completely simplify the following expression.
Apply the Plus-Change-Change Rule
Drag & drop you selection, then type in your answers
+
?
+
-
?
-
?
(20n + 6) - (11n - 4)
              Try this one on your own.
Completely simplify the following expression.
Type in your answers
+
Share the division to each
   term in the numerator,
     then simplify each
    new term separately.
Option #1
9n + 12p + 18
          3
9n + 12p + 18
 3        3       3
3n +  4p  +  6
         
Now let's try simplifying expressions
               involving division:
Group them using ovals,
 then simplify each term
  contained in each oval.
Option #2
3k + 4j + 8
Let's try a couple problems using option #1.
  Completely simplify the given expression.
Share the division to each term
in the numerator, then simplify
    each new term separately.
Option #1
8a + 24b + 32
          4
+
+
Type in your answers
9n + 12p + 18
          3
9n + 12p + 18
 3        3       3
3n +  4p  +  6
         
+
+
Completely simplify the given expression.
24x + 32y + 80
            8
+
+
Type in your answers
+
+
Completely simplify the given expression.
14s - 28t + 49
            7
-
Type in your answers
+
Completely simplify the given expression.
30p + 60q - 45
            5
+
Type in your answers
-
Οι μαθητές που έκαναν αυτή την δοκιμασία είδαν επίσης :
Cf2i - patterns in algebra
Cf1i - constructing sequences from 2nd differences
Cf5i - using the pythagorean theorem
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