Transcript Multiplication with money

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2-digit
mult.
5
10
15
20
25
Math
Facts
5
10
15
20
25
Word
probs.
5
10
15
20
25
Mult
with $
5
10
15
20
25
Mixed
review
5
10
15
20
25
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Team One
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Team Three
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Team Five
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Team Two
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Team Four
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Team Six
Two digit mult.
Question for 5 Points
Look at problem 1. Use
this equation to solve.
50 X 58 = n
Show Answer
2-digit mult.
Answer for 5 Points
2900
Back to Board
Two-digit mult.
Question for 10 Points
Look at problem 2.
Use mental math; how
many 0’s are in the
answer?
Show Answer
Two-digit mult.
Answer for 10 Points
There are 2 zeroes in
the answer.
Back to Board
Look at problem 1.
When multiplying 50 X
58, tell why 290 is an
unreasonable answer?
Show Answer
Two digit mult.
Answer for 15 Points
5 times 58 is 290
Back to Board
Two digit mult.
Question for 20 Points
Solve problem 3.
Which product is
greater?
26 X 73 or 23 X 76
Show Answer
Two-digit mult.
Answer for 20 Points
73 X 26 is greater
Back to Board
Two-digit mult.
Question for 25 Points
Find the error in the
calculated product of
this equation:
96 X 59=5655
Show Answer
Two-digit mult.
Answer for 25 Points
There is a transposition
in multiplying 6 X 59
and recording the
result.
Back to Board
Basic Math Facts
Question for 5 Points
What basic math fact
do you see in problem
5?
Show Answer
Basic Math Facts
Answer for 5 Points
5X8
Back to Board
Basic Math Facts
Question for 10 Points
Tell the basic math
facts you will use to
solve problem 6.
Show Answer
Basic Math Facts
Answer for 10 Points
4 X 6, 4 X 1, 4 X 7, 4 X
2, 2 X 2, 2 X 7, 2 X 1, &
2 X 6.
Back to Board
Basic Math Facts
Question for 15 Points
What basic addition
math facts are needed
to solve Problem 6.
Show Answer
Basic Math Facts
Answer for 15 Points
8 + 0, 8 + 4, 6 + 4, 4 +3,
2 + 2, 4 + 2 & 2 + 1
Back to Board
Basic Math Facts
Question for 20 Points
Write out the products
to fill in the table in
problem 7.
Show Answer
Basic Math Facts
Answer for 20 Points
6a 36, b 42, c 48, d 54
7a 42 b 49 c 56, d 63
8a 48, b 56, c 64, d72
9a 54, b 63, c 72, d 81
Back to Board
Basic Math Facts
Question for 25 Points
Round the first factor
to estimate, find the
basic math fact, and
solve. (#8)
Show Answer
Basic Math Facts
Answer for 25 Points
721 is rounded to 700;
the basic math fact is 5
X 7, the estimated
product is 3500, the
solution is 3605.
Back to Board
Word Probs.
Question for 5 Points
Kelly purchased 15 books
for the school library. Each
volume costs $17. How
much did Kelly spend?
Show Answer
Word Probs.
Answer for 5 Points
Kelly spent $255!!
Back to Board
Word Probs.
Question for 10 Points
Write an expression that
can be used to solve
problem 9 to determine
how much Jarred and his
mom spent.
Show Answer
Word Probs.
Answer for 10 Points
6 X $14 = x, where x is
the amount of money
spent on pizza
Back to Board
Word Probs.
Question for 15 Points
Create an expression
you can use to solve
problem number 10.
Show Answer
Word Probs.
Answer for 15 Points
Is 2 X $13.37 greater than
$26.52?
2 X $13.37 = $26.74, so
basketballs cost less at
Modell’s.
Back to Board
Word Probs.
Question for 20 Points
Write an equation that
can be used to find
Isabella’s total cost, c
in problem 14.
Show Answer
Word Probs.
Answer for 20 Points
6 X $14.95 + 3 X $5.95
=c
Back to Board
Word Probs.
Question for 25 Points
Write an equation to
determine the total money
spent on origami paper in
problem 11.
Show Answer
Word Probs.
Answer for 25 Points
(10 X $0.33) +
($15.25) = c
Back to Board
Money
Question for 5 Points
Show how 77¢ is written
using decimals.
Show Answer
Money
Answer for 5 Points
It is written
0.77
Back to Board
Money
Question for 10 Points
Tell how to determine the
number of digits to the
right of the decimal point
in a multiplication problem
involving money.
Show Answer
Money
Answer for 10 Points
You count the number
of digits to the right of
the decimal point in the
factors and add them.
Back to Board
Money
Question for 15 Points
Look at problem 14.
Create an equation that
assists you in finding
the cost.
Show Answer
Money
Answer for 15 Points
18 X $4.95 = c
Back to Board
Money
Question for 20 Points
How do you know that
$233266 is not the
correct answer to
problem 13.
Show Answer
Money
Answer for 20 Points
The first factor includes
dollars and cents; the
answer should have
two decimal places in
it. ($2,332.66)
Back to Board
Money
Question for 25 Points
Write an equation that
can be used to solve
problem 15 for n, the
total cost.
Show Answer
Money
Answer for 25 Points
(12 X $5.75) + (4 X
$22.95) = n
Back to Board
Mixed Review
Question for 5 Points
What is the order of
operations? Tell what
PEMDAS means.
Show Answer
Mixed Review
Answer for 5 Points
The order of operations
tells the way a
mathematics problem is
solved.
2
() X?+-; L-->R
Back to Board
Mixed Review
Question for 10 Points
Write
2,000,000+600,000+
50,000+4,000+20+1 in
standard form.
Show Answer
Mixed Review
Answer for 10 Points:
2,654,021
Back to Board
Mixed Review
Question for 15 Points
Find the missing digit
in this problem:
2,2 6
+1,346
3,642
#
Show Answer
Mixed Review
Answer for 15 Points
The missing digit is 9.
Back to Board
Mixed Review
Question for 20 Points
Write this number:
•Each digit in the one’s period is one
digit greater than the digit to its right.
•There is a 3 in the one’s place.
•Each digit in the thousand’s period is
a 7.
•The digit in the million’s place is three
times the digit in the one’s place.
Show Answer
Mixed Review
Answer for 20 Points
9,777,543
Back to Board
Mixed Review
Question for 25 Points
What is five hundred
thousand, two hundred
fifty-four increased by
twenty thousand?
Show Answer
Mixed Review
Answer for 25 Points
520,234
Back to Board
Show Question
“Big Points”
Question
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9
Set up a multiplication problem to
check if this division problem was
solved correctly.
Yianna and Alexandra had $6.95 to
spend on gifts for 5 friends. The items
they wanted to purchase cost $1.49
each.
They were excited because they had
the right amount of money.
Show Answer
Big Points
Answer for Big Points
They solved the
division problem
incorrectly. 6.95 /5 =
1.39. Multiplying 5 X
1.49 results in $7.45.
This is too high.
Big Points
Question 2
Authored by
Jeff Ertzberger - 2004
University of North Carolina at Wilmington
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Problems 1 - 6
1. 51 X 58 (Kaitlyn has 51 members in her
extended family; she will put 58 jewels on the
party place cards she makes for each one.)
2. 50¢ X 20 (Martin and Alec combined their 50
cent pieces together. They each had ten. How
much money did they have altogether?)
3. 26 X 73, 23 X 76
4. 96 X 59
5. 80 X 5000
6. 24 X 6172
Problem 7
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9
6
A
B
C
D
7
A
B
C
D
8
A
B
C
D
9
A
B
C
D
Problems 8 - 10
8. 5 X 721
9. Jarred and his mom bought 6 pizzas for a
class party. Each pizza cost $14.00.
10. Luke wants to buy a new basketball for
Garrett. Cole asked to buy one for Sophie.
Cole’s mom will pay for these if the students
research the lowest price. Sport’s Authority
sells them for $13.37 each and Modell’s sells
two for 26.51. Which store’s price is lower?
Problems 11 - 14
11. Vivian bought 10 pieces of origami paper for
$0.33 each. Jiwon bought a package of 50
sheets for $15.25. Each made their purchase;
what did they spend altogether.
12. Sean bought 6 video games for $6.95 each
and 3 baseball caps for $5.95 each.
13. 46 X $50.71
14. Isabella found a series of Gordan Korman’s
books for $4.95 each. She wants to buy 18
books. Write an expression to solve this
problem.
Problem 15
15. Tarin went shopping to buy magazines to
learn how to create video games. Each
of the 12 magazines he wanted to buy
cost $5.75 each. William came with him
and bought 4 books about various topics;
each book cost $22.95. How much
money did they spend altogether?
Big Points Question 2
• Sue and Talia worked together to create
Lenape Indian figures. Each bought 6
packages of model magic and created 4
Indians from each package. How many
Indians did they create altogether?
answer
Answer to Big Points Question 2
• 6X4=n
• They created 24 Indians!
Credits