What is the additional numerical information? And Solve.
George makes $20 doing lawn work for 4 hours each week. He wants to buy a $2,500 used car. He has been saving his money for 30 weeks. How much has he saved?
What is 4 hours each week and $2,500 used car.
$600
100
How would you estimate, and what is the estimated product?
34 x 78
What is 30 x 80= 2,400
100
A number close to an exact amount.
What is an estimate
200
2803 x 7
What is 19,621
200
What is the additional numerical information? And Solve.
A gymnastics meet is 2 hours long. It has 8 competitors , and each competes in 4 events. How many events will the judges score?
What is 2 hours long.
32 events
200
How would you estimate, and what is the estimated product?
2,876 x 7
What is 3,000 x 7= 21,000
200
Which property of multiplication is this...
3 (10 +2) = (3 x 10) + (3 x 2)
What is the distributive property
300
What is the first step in the shortcut method?
(What number goes down and what gets carried?)
What is multiply the digits in the ones place first.
If the product has a two digit number, the digit in the ones place goes on the answer line and the digit in the tens place gets carried to the tens place.
300
What is the missing information?
Natalie wants to find out how much her dog weighs. She picks him up and steps on the scale. Together, they weigh 94 pounds. How much does the dog weigh?
What is how much does Natalie weigh?
300
How would you estimate, and what is the estimated product?
98 x 53
What is 100 x 50= 5,000
300
The the products of the individual place values in multiplication called? Hint: you add them together to get your final product.
What are partial products.
400
Explain how you can mentally multiply 24 x 20.
What is 24 x 2 (or 24 + 24) = 48 then add the zero.
480
400
A rental car costs $65 per day. If someone rents the car for 7 days, how much will the total cost be?
What is $455
400
How would you estimate, and what is the estimated sum?
4,199 + 684
What is 4,200 + 700= 4,900
400
How can estimating be helpful when multiplying large numbers?
It helps you to see if your answer is reasonable or not.
500
EXPLAIN how to use the expanded form method to multiply 34 x 6.
First: Write 34 in expanded form: 30 + 4.
Next: Multiply 6 by 30 (180).
Then: Multiply 6 by 4 (24)
Finally: Add the partial products together.
Final answer= 204
500
A builder needs to know the area of a sidewalk that is 2,381 feet long and 7 feet wide. What is the area of the sidewalk?
What is 16,667 square feet
500
How would you estimate, and what is the estimated sum?
8,128 + 895
What is 8,000 + 900= 8,900
500
Name the properties of multiplication that we discussed in this unit. Hint: Think of the song. There are 5 total.
What are commutative, associative, distributive, identity, and zero properties.