Multiplication Mania
by Sophia Hillis
Problem 1-Vertical Record
Jade has 21 rocks in her rock collection. Her brother has 35 times as many rocks in his collection. How many rocks does Jade's brother have?
21
x35
735
Solve: 5 x 1=5
5 x 20=100
30 x 1=30
30 x 20=600
Add:
100
600
30
+ 5
735
Problem 2-Area Model
Tyler had 43 beanie boos. She got 15 times as much as that for her birthday. How many beanie boos did she get for her birthday?