Hands on : Multiplication patterns with 10,100,and 1,000

1/ Rebecca has 4 boxes of 20 cookies . She wants to know the total number of cookies . Which basic fact must she know to compute the total? What is the total?
Answer: 4*20= 80

2/ Jermy is at a theater. There are 5 rows with 20 seats in each row . He knows that 5*2= 10 . How can he use this fact to find the total number of seats in the theater?
Don't know..

* Multiply with Multiples of 10 , 100 , 1,000

1/ Toy city just recevied a shipment of 9 boxes of yo-yos . Each box holds 600 yo- yos. How many yo-yos are in the shipment altogether? What basic fact did you use to find your product?
9*600= 5,400

2/Each yo-yo coasts $3 . Toy city sold 40 yo- yos in June and 400 yo-yos in July . What was the total value of those yo-yo sales? What basic fact did you use to find your answer?
Don't know

* enzo and Eirc are sharing a pie. If Enzo eats 1/3 of the pie and Eirc eats 1/5 of the pie . Is there more than 1/2 of the pie remaining?

Please ,, help me.

1/ is correct

2/ I do not know either. I am just trying to help

You can try multiplying 5 and 20 together to get 100.

1/ is correct

2/ I do not know - trying to help though

* Answer is:

There is more or equal to 1/2 of the pie remaining. - if this isn't the answer, I do not know, I am still trying to help.

Hope this helps! :)