Module 3 Math for Third Grade

Expressions

100

Solve the following expression (2+3) x 5 =

25

200

Solve the following expression: (3x8)/8=

3

300

Which expression is equal to (2+3)x5=_____. Is it A. 4+6+10?......Is it B. 5 x 5?.... Is it C. 6 x 5?.... Is it D. 2 + 3 + 5?

B. 2 + 3 = 5. And 5 x 5 equals 25.

400

Which expression is equal to (2+3) x 8?......A. (3+3) x (4 x4).......B. (5+5) x (2+2).......C. (3x8)x (2+2).......D. (6x2) + (7 x 3)

2+3 = 5. 5 x 8 = 40. The answer is B. 5+5 = 10 and 2 + 2 = 4. 10 x 4 = 40.

500

Which expression is equal to (3x6) + ( 4 x 3)= ?.......... Is it A. (5 x 3) + (4 x 2) = ? .........B. (6 x 4) - 20= ?........C. (9 x 4) + (2 x 2)= ?...........D. ( 6 x 3) x (4x3)=?

(3x6) = 18. (4x3)= 12. 18 + 12 = 40........The answer is C. because (9x4) = 36 and (2x2)=4. 36+ 4 = 40.

Word Problems

100

Mike has 42 grapes and separates them into 6 equal groups. How much does each group get?

7

200

Which word problem goes with 42 divided by 6=? ...... Is it A.Jerry has 42 apples and places an equal number of apples into 6 baskets........B. Jerry has 42 apples and gives 6 of them to a friend........C. Jerry has 6 apples and needs more apples to deliver to a customer.............D.Jerry buys 42 apples and then purchases 6 additional apples.

A

300

Which word problem goes with 24 divided by 8=? ...... Is it A. Jerry has 24 apples and adds 8 ........B. Jerry has 24 apples and gives 8 of them to a friend........C. Jerry has 32 apples and needs more apples to deliver to a customer.............D. Jerry has 24 apples and places an equal number of apples into 8 baskets.

D.

400

Susie has 64 oranges. She separates the oranges into 8 equal groups. How many oranges are in each group?

8

500

There are 75 chairs and 9 tables. How many chairs at each table if each table receives the same amount of chairs? How many chairs will be left over?

8 chairs at each table and 3 remaining chairs left over. 8 x 9 = 72 and 75-72=3.

Solve the Unknown

100

81 divided by 9 = a.......What is the value for a?

9

200

21 = p x 3. What is the value of p?

7

300

(28 + 2) = 5 x p. What is the value of p?

p = 6

400

(7 x 6) = ( 40 + p) What is the value of p?

p = 2

500

(10 x 4) = (24 + p).....What is the value of p?

16

Opposites

100

10 / 2 = p is the same as A. p x 2 = 6...... B. p x 2 = 8 ........C. p x 2 = 10 ......... D. p x 2 = 12

C. 10 divided by 2 equals 5, and 5 times 2 equals 10.

200

24 / 6 = p is the same as A. p x 6 = 24...... B. p x 6 = 30 ........C. p x 6 = 36 ......... D. p x 6 = 42

A. 24 divided by 6 equals 4. 4 x 6 = 24

300

36 / 9 = p is the same as A. p x 9 = 18...... B. p x 9 = 27 ........C. p x 9 = 36 ......... D. p x 9 = 45

C. 36 / 9 = 4 and 4 x 9 = 36.

400

Which equation is true? A. 40 / 8 = 8 x 7.......... B. 64 / 8 = 20 x 2 ........ C. 32 / 8 = 2 x 2 ......... D. 90 / 10 = 9 x 9

C. 32 x 8 = 4 and 2 x 2 = 4. Therefore 4 = 4

500

Which equation is true? A. 60 / 12 = 5 x 10.......... B. 24 / 8 = 20 x 2 ........ C. 15 / 3 = 6 x 2 ......... D. 42 / 7 = 3 x 2

D. 42 / 7 = 6 and 3 x 2 = 6.

Multi-Step Word Problems

100

John made 21 cookies for his school bake sale. He gave 7 cookies to his neighbors. Then he packed the left over cookies equally into 2 containers. How many cookies were in the containers he took to school?

The answer is 7. He began with 21 cookies. He gave away 7 (21-7=14). Then he took the 14 cookies and put equally into 2 containers (14/2=7)

200

Danielle made 31 cookies for her school bake sale. She gave 7 cookies to her neighbors. Then she packed the left over cookies equally into 4 containers. How many cookies were in the containers she took to school?

The answer is 6. She began with 31 cookies. She gave away 7 (31-7=24). Then she took the 24 cookies and put equally into 4 containers (24/4=6)

300

Mary made 64 cookies for her school bake sale. She gave 8 cookies to her neighbors. Then she packed the left over cookies equally into 7 containers. How many cookies were in the containers she took to school?

The answer is 8. She began with 64 cookies. She gave away 8 (64-8=56). Then she took the 56 cookies and put equally into 7 containers (56/7=8)

400

Sharon has 63 oranges. She gives 7 oranges away. She then separates the oranges into 7 equal groups. How many are in each group?

The answer is 8 because 63 - 7 = 56 and 56 / 7 = 8

500

Sharon has 74 oranges on Sunday. She gives 2 oranges away on Monday. Then on Tuesday, she adds 8 oranges. She separates the oranges on Wednesday into 10 equal groups. How many are in each group?

The answer is 8. She has 74 oranges on Sunday. On Monday she has 74-2=72 oranges. On Tuesday she has 72 + 8 = 80 oranges. On Wednesday she has 80 / 10 = 8 groups of oranges.