MathStories.comTM  

Answers to 3rd and 4th grade Problems 

Answers for worksheets from 1 to 50

If you find any mistakes, please contact us immediately. Thanks

Sheet #1

1) 9 ribbons

2) 9

3) 8, 9 , 6 and 5

4) 4, 5, 2 and 3

5) 6 pupils

6) 9 children

7) 6 rows

8) 5 cents

9) 3 months

Sheet #2

1) 6

2) 9, 7, 6, 5, 2 and 8

3) 5, 6, 4, and 9

4) 4, 7, 9 and 10

5) 4 pupils

6) 6 children

7) 4 rows

8) 8 cents

9) 5 cards

Sheet #3

1) 9 cards

2) 7 cards, 10, 6

3) 7 cents and 3 cents

4) 8 cards and 2 extra

5) 9 cents. 1 cent remainder

6) 8 balloons and 2 left over

7) 6 desks/row, 4 left over

8) 10 minutes

9) 4 ice cubes

10) 4 hours

11) 7 balloons and 3 cents left over

Sheet #4

1) 32 beans

2) 41 bands

3) 32 boxes

4) 14 cars

5) 12 sheets

6) 16 cents

7) 24 rows

8) 23 boxes

9) 27 days

Sheet # 5

1) 35 days

2) 7 days, 14, 21, 28,

35, 42, 49, 56, 63,

and 70

3) $56

4) $42

5) 5 cents

6) 7 days

7) 4 boats or 7 boats

8) 8 coins

9) $9

10) 9 cents

Sheet # 6

1) 7 gumdrops, 2 left over

2) 7 cards , 3 left over

3) 10 pages

4) 5 quarts

5) 14, 21, 28, 35, 42, 49, 56, 63

6) 6 chairs

7) 5 cookies, 5 left over

8) 9 stamps, 10, 7

9) 10 apples, 2 left over

10) 8 candies

Sheet # 7

1) 14, 17, 36

2) $11

3) $13

4) 14 ribbons, 1 left over

5) 15 cookies

6) 16 cookies

7) 12 TVs

8) 13 computers

9) 17 pages

10) 18 words

Sheet # 8

1) 3 bars

2) $9

3) 10 pages

4) 8 quarts

5) 8 numbers

6) 4 chairs

7) 6 cookies

8) 8, 9, and 6 stamps

9) 13 apples, 2 left over

10) 8 candies

Sheet # 9

1) 52 circles

2) 12 bags

3) 12 pinwheels

4) 11 scouts

5) Ted used more, 1

6) 22 marbles

7) 19 miles/hour

8) 21 kids

9) 31 cartons

10) 26 rows

Sheets # 10

1) 4 bars

2) $9

3) 8 pages

4) 6 quarts

5) 8 numbers

6) 4 chairs/row

7) 7 cookies, 0 left over

8) 5, 8, and 3 stamps

9) 4 apples, 0 left over

10) 7 stamps, 4 cents left over

Sheet # 11

1) 46 circles

2) 11 bags

3) 12 pinwheels

4) 9 scouts

5) Jim, 2 cans

6) 21 marbles

7) 18 miles

8) 20 kids

9) 27 cartons

10) 23 rows

Sheet # 12

1) 9

2) 4, 5, 9 and 7

3) 7 clothespins

4) 4, 6, 8, and 10 hoops

5) 4 candies

6) 3, 6, 8, 10, 11 and 2

7) 2, 3, 4, 5, 7, 9 balloons

8) 8 fish

9) 5 books

10) 9 pencils

Sheet # 13

1) 20 bands

2) 30 clips

3) $4

4) 40 books

5) 40 balloons

6) 18 marbles

7) 23 cones

8) 23 crayons

9) $9

10) 41 cards

Sheet # 14

1) 34 shells

2) 54 inches

3) 42 pennies

4) 13 crayons

5) 6 cookies

6) 8 marbles

7) 44 beads

8) 32 crayons

9) $12

10) 11 cards

Sheet # 15

1) 2 piles

2) 2 balloons

3) 6 lanes

4) 9 frogs

5) 8 soccer balls

6) 9 people

7) 8 horses

8) 6 trucks

9) 7 tacos

10) 2 aliens

Sheet # 16

1) 6 people

2) 4 cats

3) 6 french fries

4) 5 strawberries

5) 8 penguins

6) 5 cages

7) 3 people

8) 3 pieces

Sheet # 17

Answers are at the bottom of the worksheet.

Sheet # 18

1) $2.50

2) 99 cents

3) $1.04

4) 30 cents

5) 12 wheels

6) 6 feet, 9 feet, 12 feet

7) 24 candies

8) 18 fishhooks

9) $1.25

10) Yes

Sheet # 19

1) $6

2) $6

3) $2

4) $5

5) $11

6) $6

7) $18

8) $1

9) 90 cents

10) 80 cents

Sheet # 20

1) 3 cents (2) 2 cents

3) 16 cents ( 4) Yes

5) 16 cents (6) 4 cents

7) a) $12 and 6 cents off

b) $1 and 4 cents off

c) $25 and 10 cents off

d) $4 and 8 cents off

e) $12 and 8 cents off

8) 30 cents

9) $2.40

10) $10

Sheet # 21

1) 150 students

2) 200 students

3) 100 points

4) 500 points

5) 500 points

6) 100

7) 1,100 points

8) 1,110 points

Sheet # 22

1) Length

2) Volume

3) Area

4) Length

5) Volume

6) Area

7) Length

8) Area

9) Length

10) Volume

Sheet # 23

1) Add

2) Divide

3) Subtract

4) Subtract

5) Multiply

6) Divide

7) Divide

8) Divide

9) Multiply

Sheet # 24

1)

(a) 9

(b) 9

(c) 9

2) 81 tickets

3) 320 tickets

4) Yes

5) 60 cents

Sheet # 25

1) $1,111

2) Camcorder, VCR, Card Radio
and Answering machine. There are
other combinations.

3) Yes. $493

4) Radio and answering
machine or VCR and
answering machine

5) $18

6) $382

7) $198

8) $70

9) $276

10) $236

Sheet # 26

 

See answers below

Sheet # 27

1) 4 cans

2) 9 boxes

3) 9 apples/bag

4) 9

5) Soup : 8 cents
and sugar : 9 cents

6)

a) 6 cents

b) 7 cents

c) Brand A: 7 boxes, $3.36

Sheet # 28

1) 14 cows

2) 14 cats

3) 70 shells

4) 39 cards

5) sleds = 4, skateboards=9

6) 24 dogs

7) 121 kittens

8) 5 boys

9) 206 girls

10) 22 kites

Sheet # 29

1) 40 legs

2) 9 eggs

3) 9 puppies

4) 56 cats

5) 50 oranges

6) 24 colts

7) 140 eagles

8) 45 players

9) 7 kites

Sheet # 30

1) 4 goals

2) 208 Beanie Babies

3) 87 people

4) 822 kicks

5) 150 balls

6) 24 birds

7) 167

8) 10 flowers

9) 228 lunches

10) 50 stitches

Sheet # 31

1) $10.00

2) 31 hours in January

365 hours in a year

3) 5 packs

4) 10.30 hours

5) 2, 3, 4 trips

6) 1 hour

Sheet # 32

1) 10, 20, and 30 miles

2) 30 weeks

3) 12 weeks

4) 4200 beats/hour

1,00800 beats/day

5) 12 leap years

Sheet # 33

1) $8.40

2) Jeff: 11 years

Laurel: 5

3) July: 14 pounds
August, 16 pounds
September, 18
December, 24 pounds

4) 4 barbies

5) $2.14

 

 

Sheet # 34

1) 33 points/83 points

2) 28 poins/78 points

3) 36 points

4) 47 points/3 points

5) 78 points/ 22 points

6) 25 points

7) 50 points

8) 17 points

Sheet # 35

1) $7.07

2) 25 cents

3) $5.94

4) $15

5) $1.10

6) 10 balls

7) 240 napkins

8) $4.95

 

Sheet # 36

1) 868

2) Yes. Yes

3) $7.77

4) less than 100 eggs

5) $2.53

6) 21 cents

7) $54.00

8) $22.74

9) $10.25

10) 54 hours

Sheet # 37

1) 32 children

2) 35 days

3) 52 cents

4) 31 cents

5) $2.13

6) $3.52

7) $4.41

8) $1.14

9) $4.02

10) $1.71

Sheet # 38

1) 8 bags

2) 21 cards

3) 32 crayons

4) 4 teams

5) 35 candies

6) 6 rows

7) 8 groups

8) 28 tennis balls

9) 90 pencils

10) 80 markers

Sheet # 39

1) 4 shirts

2) 9 pencils

3) 32 tires

4) 8 girls and 8 boys

5) 42 days

6) 6 players

7) 8 chairs

8) 9 pencils

9) 27 miles

10) 5 hours

Sheet # 40

1) 5 cookies

2) 36 engines

3) 8 books

4) 64 pictures

5) 5 bars

6) 54 tires

7) 9 apples

8) 12 cents

9) 80 pages

10) 7 boxes

Sheet # 41

1) $15.00

2) 5 feet

3) $6.00

4) 3.5 hours

5) $8

6) 50 cents

7) $4

8) 12 apples

Sheet # 42

1) $4.84

2) 32 stamps, yes, 1 cent

3) 413

4) 140 bands

5) $6.26

6) $3.74

7) 200 children

8) 160 pencils

9) 80 pictures

Sheet # 43

1) 15 chairs

2) 7 rows

3) yes, $4

4) No, No, Yes.

$3.80

5) No, Yes, $6

6) $12.30

7) $2.70

8) $2.25

9) 8, 7, 6, 5, 5 pencils

10) $2.85

Sheet # 44

1) 32 pupils

2) 35 days

3) 16 cents

4) 31 cents

5) $1.31

6) $4.95

7) $6.46

8) No. He needs
25 inches. 18 + 9 = 25

9) $3.90

10) $1.51

Sheet # 45

1) 31 cents

2) $3.21

3) $9.88

4) $10.74

5) 33 stamps

6) 6 badges

7) $1.14

8) Same size dogs

9) 32 bags

10) $1.93

Sheet # 46

1) $13.23

2) $25.05

3) 16 worms

4) 41 cents

5) $25.48

6) 15 cookies

7) $18.00

8) 9 cents

9) $18.00

10) 15 cents

Sheet # 47

1) $52.01

2) 4, 12 bags

3) 12 lollipops

4) $4.11

5) $20.00

6) Yes. She bought
108 inches

7) 24 candies
96 candies

8) 36 cents

9) $15.21

10) $4.50

Sheet # 48

1) 2

2) 8

3) Yes

4) 6, 5, 4, 3, 2, 1

5) 1, 1 1/2, 2, 2 1/2, 3, 3 1/2, 4

6) 4, 3 1/2, 3, 2 1/2, 2, 1 1/2, 1, 1/2, 0

Sheet # 49

1) 1, 1 1/4, 1 1/2, 1 3/4, 2, 2 1/4, 2 1/2, 2 3/4, 3

2) 3, 2 3/4, 2 1/2, 2 1/4, 2, 1 3/4, 1 1/2, 1 1/4, 1, 3/4, 1/2, 1/4, 0

3) $1, 1 1/4, 1 1/2, 1 3/4, 2 1/4, 2 1/2

4) 2

5) Yes

6) 2

7) 2

8) Yes

9) Yes

Sheet # 50

1) 4

2) 32

3) 16 grape fruits

4) 4, 6, 8, 10 and 12

5) No

6) 2 1/2

7) 2

8) 2

9) 3

10) 1

1. Carol saw 12 skirts. Each skirt cost $10. How much would it cost to buy all the skirts?

$120

 2. The salesman sold these articles during one week.

8 suits
$ 60 each
10 skirts
$7 each
7 coats
$60 each
6 suits
$90 each
Find the amount of money received for

a) the $60 suit : Answer: $480

b) the skirts; Answer: $70

c) the coats; Answer: $420

d) the $90 suits: Answer: $540

e) all the clothes on the list. Answer: $1,510

 

3. Tom bought 9 suits. At least one of the 9 suits costs $40. Also, one of the suits Tom bought cost $80.

a) The total cost of the suit could not have been $720. Why?

 No. Tom has to buy all nine $80 suits to pay $720. But he needs to buy at least one $40 suit

 b) The total cost of the suit could not have been $360. Why?

No. Tom has to buy all nine $40 suits to pay $360. But he needs to buy at least one $80 suit

 4) If 4 suits cost $80 each and 5 cost $40 each, how much did he pay for all the suits? Answer: $520

 5) If 3 suits cost $80 each and 6 suits cost $40 each, how much did he pay for all the suits? Answer: $480

  

6. Complete the table.

Number of $40 suits
Number of $80 suits
Total cost of suits
$40 $ 640 $ 680
$80 $ 560 $ 640
$120 $ 480 $ 600
$160 $ 400 $ 560
$ 200 $ 320 $ 520
$240 $ 240 $ 480
$ 280 $ 160 $ 440
$ 320 $ 80 $ 400