Multiply by 2 & 4
2 x 3 =
6
3 x 9 =
27
5 x 1 =
5
9 x 4 =
16
Products of x10 always end in what number(s)?
0
4 x 6 =
24
3 x 6 =
18
5 x 4 =
20
9 x 7 =
63
What is similar and different between the products of x5 and x10?
Both products of x5 and x10 end in 0. Products of x5 also end in 5.
4 x 4 =
16
6 x 9 =
54
10 x 8 =
80
Fix the multiples sequence:
8, 18, 24, 32, 42, 48, 56, 64
8, 16, 24, 32, 40, 48, 56, 64
What do the products of x2, x4, x6, and x8 all have in common?
The products are all even or the digit in the ones place is always even.
Fix the multiples sequence:
4, 8, 12, 14, 16, 18, 20, 24, 28
4, 8, 12, 16, 20, 24, 28
6 x 6 =
36
5 x 9 =
45
8 x 8 =
64
Finish each equation:
even# x even# =
even# x odd# =
odd# x odd# =
even
even
odd
4 x 11 =
44
Fix the multiples sequence:
6, 12, 18, 23, 30, 36, 43, 48, 52, 58
6, 12, 18, 24, 30, 36, 42, 48, 54, 60
10 x 11
110
8 x 9 =
72
Name all the factors discussed in class that have products that are double the products of another factor (there are 4).
4s are double 2s
6s are double 3s
8s are double 4s
10s are double 5s