Numbers to 10,000

Estimation and Rounding

Addition to 10,000

Subtraction to 10,000

Bar Models

100

What is the standard form of five thousand, three hundred, twenty-four

What is 5,324

100

Round to the nearest 10:

139

658

1,099

**140**

**660**

**1,100**

100

Add: 1,432 + 2,314.

1,432 + 2,314 = **3,746**

100

Find the difference between 7,825 and 2,204.

The difference is **5,621**.

100

Draw a bar model to show this problem:

Mrs. Tan buys a duck and a chicken. The mass of the duck is 2,300 grams. The mass of the chicken is 1,675 grams. How much heavier is the duck than the chicken?

The duck is **625 grams **heavier than the chicken.

200

Write in word form: 6,956

What is six thousand, nine hundred, fifty-six

200

A sofa costs $836. What is the cost of the sofa rounded to the nearest **hundred?**

The cost of the sofa rounded to the nearest **hundred** is **$800.**

200

What is 4 hundreds + 8 hundreds?

12 hundreds or one thousand, two hundreds (1,200).

200

Find the difference between 7,000 and 4,567.

The difference is **2,433.**

200

Show this problem using bar models:

John and Tracy sell flags to raise money for their club. John sells 457 flags and Tracy sells 686 flags.

A. How many flags do they sell in all?

B. Who sells more flags? How many more?

A. They sell **1,143 **flags in all.

B. **Tracy** sells more flags, and she sells **229 **more flags than John.

300

Write in expanded form: 4,598

What is 4,000 + 500 + 90 + 8

300

Estimate the value of 1,689 + 521 by rounding each number to the nearest hundred.

1,689 rounds to 1,700 and 521 rounds to 500, so 1,700 + 500 = **2,200.**

300

Find the sum of 3,684 and 5,956.

3,684 and 5,956 = **9,640**

300

Lena had $2,050. She buys a computer for $1,598. How much money does she have left?

Lena has **$452** left.

300

Solve using bar models:

Leila drinks 1,466 milliliters of water a day. Mark drinks 2,895 milliliters more than Leila.

A. How much water does Mark drink?

B. How much water do they drink in all?

A. Mark drinks **4,361** milliliters a day.

B. They drink **5,827 **all together.

400

Complete the number pattern: 5,762 5,752 _______ , ________ , _______.

5,762 5,752 5,7**4**2** **5,7**3**2** **5,7**2**2

400

Estimate the value of 5,699 - 379 by rounding each number to the nearest **ten**.

5,699 rounds to 5,700 and 379 rounds to 380, so 5,700 - 380 = **5,320.**

400

Durai bought a computer for $1,346. He bought a printer for $452. How much did Durai pay in all?

Durai paid **$1,798** in all.

400

Mr. Rajan earns $3,000 a month. He spends $1,346 a month and saves the rest. How much money does Mr. Rajan save each month?

Mr. Rajan saves **$1,654** each month.

400

Solve with bar models:

Minah buys a sofa for $2,500 and a dining table for $1,999 for her apartment.

A. Which item is less expensive?

B. How much less expensive is it?

C. How much does she spend in all?

A. **Dining Table** is less expensive.

B. The table is **$501** less expensive than the sofa.

C. Together they cost **$4,499.**

500

Compare the numbers with > or <

7,733 ____ 7,743

3,878 ____ 3,978

4,567 ____ 4,566

7,733 **<** 7,743

3,878 **<** 3,978

4,567 **>** 4,566

500

Beatrice has 146 books. Her brother has twice as many books as Beatrice. Estimate to the nearest ten the number of books they have altogether.

146 rounds to 150, so 150 + 150 + 150 = **450 books.**

500

A baker baked 1,464 rolls on Saturday. He baked 1,867 more rolls on Sunday than on Saturday. How many rolls did he bake on Sunday?

He baked **3,331 **rolls on Sunday.

500

Mr. Bema needs exactly 1,260 kilograms of flour for his factory. He has 985 kilograms of flour now. How many more kilograms of flour does Mr.Bema need?

Mr. Bema needs **275 kilograms of flour.**

500

Solve with bar models:

Ravi has 1,286 stamps. Terell has 1,528 more stamps than Ravi. How many stamps do they have in all?

Ravi and Terell have **4,100** stamps in all.