Page 57 - TB_5B
P. 57
... Challenge Number Pyramids
1 . The following number pyramid shows the products.
2=2
2 2=4
2 2 2=8
2 2 2 2 = 16
2 2 2 2 2 = 32
2 2 2 2 2 2 = 64
2 2 2 2 ... 2 2 2 2=
a. Write the ones place digit of the 20th product and explain your answer.
2, 4, 8, and 6 are repeated.
Since 4 numbers are
repeated, divide 20 by 4.
46
1 . The following number pyramid shows the products.
2=2
2 2=4
2 2 2=8
2 2 2 2 = 16
2 2 2 2 2 = 32
2 2 2 2 2 2 = 64
2 2 2 2 ... 2 2 2 2=
a. Write the ones place digit of the 20th product and explain your answer.
2, 4, 8, and 6 are repeated.
Since 4 numbers are
repeated, divide 20 by 4.
46
