Mental Patterns
Place Value
Word Problems
Vocabulary
100
Solve using mental math. 50 x 5
What is 250?
100

The value of 7 in 24,784

700

100

416

four hundred sixteen

100

You want to share 34 pencils among 6 friends. How many would each friend get?

34  รท 6 = 5 r 4 pencils

100

In math, what is an expression?

A sentence written with numbers.

for example: 7+4 = 11

Seven plus four equals eleven.

200
Solve using mental math. 80 x 30
What is 240?
200
the value of 2 in 120, 457

20,000

200

16,423

sixteen thousand, four hundred twenty three

200

An adult panda can eat 138 pounds of bamboo each day. How many pounds of bamboo can a panda eat in a week?

138 x 7 = 966 lbs.

200

a. difference       b. sum

c. quotient          d. product

b. sum

300
Solve using mental math. 600 x 70
What is 42,000?
300

the value of 6 in 2,653

600

300

104,895

one hundred thousand four, eight hundred ninty-five

300

Harry buys 9 dozen eggs. How many eggs does he have in all?

9 x 12  =  108 eggs

300

The answer for a division problem is:

a. difference       b. sum

c. quotient          d. product

c. quotient

400
Solve using mental math. 90 x 40
What is 3,600?
400

the value of 8 in 98,000,214

8 million

400

23,372,543

twenty three million, three hundred seventy two, five hundred forty three

400

Ellen had 380 legos, but she lost 57 of them. How many legos does she have now?

380 - 57 = 323 legos

400

The answer for a multiplication problem is:

a. difference       b. sum

c. quotient          d. product

d. product

500
Solve using mental math. 500 x 800
What is 400,000?
500
the value of 1 in 259.1

1/10 or one tenth

500

124,324.002

one hundred twenty four thousand, three hundred twenty four and two thousandths

one hundred twenty four thousand, three hundred twenty four point zero zero two

500

Beth has 4 packs of crayons. Each pack has 10 crayons in it. She also has 6 extra crayons. How many crayons does Beth have altogether?

4+ 10 + 6 = 20 crayons

500

The answer for a subtraction problem is:

a. difference       b. sum

c. quotient          d. product

a. difference

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