1. { } Numbers N = W = Z = Q = Natural Numbers 1 2 3 4 5 6 7 8 9 10 ……..
Whole Numbers
W = 1 2 3 4 5 6 7 8 9
……..
Integers
Z = …… -3 -2 -1 1 2 3 4 5
……..
Rational Numbers p { }
Q =
: p , q both integers ,
q ≠ 0 q
M May

2. e R Q Z W N Some Rational numbers : 1/2 A Venn Diagram 3 4 7 11 8 3 6-7 9
Some Rational numbers : R Q Z W N π -2
1/2 e 1 2 6
A Venn Diagram

3. - calculate ÷ / + divide add subtract multiply times x Sum of
Difference
between
How many?
times
total of ….
Equal shares
How much more than?
Total when each cost ….
… is …. more than …
How much for each?
How much for …. at …
… is …. less than …
How much altogether?
Fair shares
Several at ...
How much less than?

4. Integers -7 + 9 = 2 -1 + 2 = 1 -3 + 5 = 2 -6 + 9 = 3 -16 16 -2 -15 2= 2 = 1 = 2 = 3
-16 16 -2
-15 2 = 2 -5 3 -1 -3 -2 4 = -3 -8 8 -2
-13 2 = = = = = = = = =
-6 - (-9) =
-3 - (-2) =
-8 - (-5) = = = =
7 + (-9) =
3 + (-1) =
3 + (-5) = = = =
-7 - (-9) =
-3 - (-1) =
-3 - (-5) =
7 - (-9) =
3 - (-1) =
3 - (-5) =
-6 + (-9) =
-3 + (-2) =
-8 + (-5) =

5. Fractions 4 7 2 7 = 6 7 3 5 3 8 + - 2 5 4 5 24 40 15 40 3 5 5 6 = 13 30 1 = + - + 6 5 1 5 9 40 = = = 1 2 3 1 6 = 5 6 + 3 8 3 4 2 9 7 12 4 9 5 18 = 13 18 + + + 3 8 6 8 8 36 21 36 = + = + 5 6 7 8 = 17 24 1 + 9 8 1 8 = 1 29 36 = = 3 4 9 16 = 5 16 1 +