Malina has 5 cookies, each one has 9 chocolate chips. How many chocolate chips are there?
She ate 16 chocolate chips, how many are left?
45 chips, 29 chips left
200
6x5
30
200
4x9
36
200
80x9
720
200
5x ____=40
8
200
Donald bought 4 books from Phoenix for $3 each. He paid with a $20 bill, how much change did he get back?
$8
300
9x5
45
300
9x8
72
300
30x4
120
300
6x _____=54
9
300
Jonathan has 3 pairs of running shoes, how many shoes does he have?
Each shoe has 7 zebra stripes, how many zebra stripes are there in all?
6 shoes, 42 zebra stripes
400
11x5
55
400
9x6
54
400
80x7
560
400
4x _____=160
4
400
Jocelynn has 4 dolls, each has 7 different dresses. How many dresses does she have?
Amy spills juice on 13 dresses, how many are left now?
28 dresses, 15 dresses left
500
How can you use the ones place in your product to check your answer?
The ones place must be a five or a zero when a factor is 5.
500
Give two ways you can multiply with a factor of nine.
Count by nines, use your fingers and start on the left, use the other factor-subtract one and add enough to get to nine, adding the digits in the product with give you nine
500
60x7
480
500
9x ____=99
11
500
Gabriel has 6 doughnuts, each doughnut has 8 blue icing spots. How many spots do the doughnuts have?
If Carlos eats 2 doughnuts, how many spots are left?