Answer:

Step-by-step explanation:
This book has 500 pages in total.
We should split up the place values.
1 - 9
One only appears once.
1
10 - 19
One appears 11 times.
1 + 11
20 - 99
One only appears 8 times.
1 + 11 + 8
Add:
1 + 11 + 8
=> 20
Since the same is for 200-299, and so on. Let us add twenty four times.
20 * 4
=> 80
Looking back to 100-199, there are 120 ones.
Add:
120 + 80
=> 200
Answer:
hello your answer is 21 y=21
Step-by-step explanation:
3 times -7 is 21- hope i helped
Yes -1 is a rational number. We can express it as a fraction of two whole numbers
One way is -1 = -1/1
Answer:
c or d but i think d
Step-by-step explanation:
Answer:
cindy=15 grandmother=75
Step-by-step explanation:
90 divide 6 equal to 15