Download Record 2-Digit by 2-Digit Multiplication

Name
Lesson 10.6
Record 2-Digit by 2-Digit Multiplication
Estimate. Then choose either method to find the product.
1.
28
⫻
19
_
5. 76 ⫻ 83
2.
36
⫻
53
_
3.
6. 41 ⫻ 69
$76
⫻
25
_
7. 57 ⫻ 65
Problem Solving and Test Prep
8. 82 ⫻ $48
Sun Beach Parasail
Total Number of Days Rented
USE DATA For 9–10, use the bar graph.
9. Last summer, 19 people rented
parasails on each of the windy days.
How many people in all parasailed
last summer on windy days?
10. If 13 people rented parasails on each
300
300
250
200
150
100
50
28
22
13
0
of the windy and cold days, how many
people rented parasails in all?
11. Willa bought 16 oak trees
64
⫻
31
_
4.
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Su
ys
ys
a
yD
a
yD
ind
W
Weather
in
Ra
ys
ys
a
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a
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12. There are 47 members in the Fun in
for her backyard. Each tree cost
$33. How much did the trees cost
in all?
the Sun Parasail Club. Each member
spent 88 hours parasailing last year.
How many hours in all did the club
members spend parasailing last
year?
A $300
A 6,413
B
$480
$528
D $600
C
B
PW69
4,136
4,230
D 7,236
C
Practice
© Harcourt • Grade 4
MXENL08ASE4X_PHTE_C10_L6.indd PW69
6/15/07 9:18:24 AM
Name
Lesson 10.6
Record 2-Digit by 2-Digit Multiplication Possible estimates
are given.
Estimate. Then choose either method to find the product.
1.
28
19
_
600; 532
5. 76 83
2.
36
53
_
3.
$76
25
_
Lesson 10.7
Multiply 2-Digit and 3-Digit Numbers and Money
Estimate. Then find the product.
64
31
_
4.
Name
1.
58
39
_
2,000; 1,908 $2,400; $1,900 1,800; 1,984
6. 41 69
7. 57 65
2,400;
2,262
8. 82 $48
5. $3.97 36
6,400; 6,308 2,800; 2,829
4,200; 3,705 $4,000; $3,936
Problem Solving and Test Prep
Total Number of Days Rented
9. Last summer, 19 people rented
parasails on each of the windy days.
How many people in all parasailed
last summer on windy days?
247 riders
10. If 13 people rented parasails on each
300
300
9. $9.32 42
Possible estimates are given.
$4.28
45
__
3.
622
76
__
200
6. 544 47
7. 37 $638
25,000;
25,568
8. 747 23
14,000;
17,181
11. $1.23 71
12. 15 602
12,000;
9,030
$70;
$87.33
32,000;
34,182
100
50
28
0
s
s
y
nn
Su
y
Da
y
ain
R
y
Da
y
ind
13
22
s
y
Da
y
Da
W
Weather
Problem Solving and Test Prep
s
ld
Co
13. Sally found 9 15 by using the break 14. Each of 41 electric cars can drive
50 miles an hour. How many miles in
all do the cars travel in one hour?
apart strategy. Show how Sally found
the product.
9 ⴛ 5 ⴝ 45; 9 ⴛ 10 ⴝ 90;
45 ⴙ 90 ⴝ 135
2,050
12. There are 47 members in the Fun in
for her backyard. Each tree cost
$33. How much did the trees cost
in all? C
the Sun Parasail Club. Each member
spent 88 hours parasailing last year.
How many hours in all did the club
members spend parasailing last
B
year?
A $300
A 6,413
$480
8,000;
7,363
$24,000;
$23,606
10. 81 422
$360;
$391.44
150
455 riders
B
199
37
_
250
of the windy and cold days, how many
people rented parasails in all?
11. Willa bought 16 oak trees
4.
48,000;
47,272
$200;
$192.60
$160;
$142.92
Sun Beach Parasail
USE DATA For 9–10, use the bar graph.
2.
$528
D $600
C
B
4,136
4,230
D 7,236
C
16. How many minutes are there in
bread for $3.89 a loaf. How much did
Ken spend on bread in all?
A
A $202.28
$206.89
C
Circled problems are suggested homework problems.
PW69
15. Ken bought 52 loaves of multigrain
B
24 hours? Explain how you found
your answer.
10,080;
7 ⴛ 24 ⴛ 60 ⴝ 10,080.
$206.17
D $208.21
Circled problems are suggested homework problems.
Practice
PW70
© Harcourt • Grade 4
MXENL08ASE4X_PHTE_C10_L6.indd PW69
6/15/07 9:18:24 AM
Practice
© Harcourt • Grade 4
MXENL08ASE4X_PHTE_C10_L7.indd PW70
Lesson 10.6
7/2/07 10:04:56 AM
Lesson 10.7
Item
Suggested rationale
Item
Suggested rationale
3
Practice multiplying 2-digit by
2-digit numbers with money
1
practice multiplying 2-digit
numbers
5
Practice multiplying 2-digit by
2-digit numbers
2
practice multiplying 2- and
3- digit numbers and money
7
Practice multiplying 2-digit by
2-digit numbers
5
practice multiplying 2- and
3- digit numbers and money
8
Practice multiplying 2-digit by
2-digit numbers with money
8
practice multiplying 2- and
3- digit numbers
10
use a bar graph to practice
multiplying 2-digit by 2-digit
numbers
9
practice multiplying 2- and 3digit numbers with money
multiple choice; multiply with
money
13
use the break apart strategy
11
14
12
multiple choice; multiply 2digit numbers
problem solving;
multiplication
15
multiple choice; multiply with
money
PW69-PW70
© Harcourt · Grade 4
MXENL08AWK4X_PHTE_Rat.indd PW69-PW70
7/2/07 12:00:38 PM