20
21 x 12
252
Sally picked four bags of apples with 20 apples each. How many apples did she have total?
80
When you multiply any number times 10, what do you do? Must give an example.
Add a zero to the end of that number.
12 x 10 = 120 (example)
9 x 4
36
56 x 33
1,848
The class has 12 students, each student had three pencils, how many pencils were in the class total?
34
Same signs
Add and keep the sign
10 x 5
50
72 x 42
3,024
Each dog has 13 bones. If there are ten dogs, how many bones are there?
130
Different signs
Subtract and keep the sign of the bigger number.
12 x 3
36
81 x 62
5,022
Each day Mike read 14 pages of his book. After 11 days, how many pages has he read?
154
What is the definition of absolute value?
How far a number is from zero
20 x 3
99 x 21
2,079
Jamie drove 32 miles a day for 9 days, how many miles did he drive total?
288
Any number multiplied by zero equals what?
zero