multiplication
4x6=
24
4x20=
80
4 + 5 =
40 + 50 =
400 + 500 =
9
90
900
534, 912
Value of the 4?
4,000
4 x 10 =
40
3x9=
27
5x30=
150
4 + 3 =
40 + 30 =
400 + 300 =
7
70
700
273,465
Value of the 6?
60
4 x 1000 =
4000
7x7=
49
6x40=
240
7 + 8 =
70 + 80 =
700 + 800 =
15
150
1,500
329,478
Value of the 4?
400
4 x 100 =
400
5x8=
40
7x80=
560
15 - 8 =
150 - 80 =
1,500 - 800 =
7
70
700
478,691
Value of the 4?
400,000
4 x 100,000 =
400,000
9x8=
72
50x50=
2,500
74 - 6 =
74 - 16 =
74 26 =
68
58
48
How many times bigger is each place value to the one to its right?
10 X
(10 times)
What is the rule for multiplying factors that have zeros in the ones place?
add a zero to the product