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EGYPTIAN AMERICAN INTERNATIONAL SCHOOL

ELEMENTARY MATH DEPARTMENT2018/2019 Grade 4

Name : ………………………………. Date : ……..…… Class …… :

Revision Sheet

1. Place value Vs. Value

Answer the following questions:

1. The place value of 9 in number 1,952 is 900

2. In number 65,389, the value of the underlined digit is 60,000

3. If you know that my value is 6000 so what is my place value Thousand

4. Find the value of digit 3 in the following numbers:

23,542 345,890 456,783 5,638

(…3,000.) (300,000.) (…3.) (…30.)

Put <,> or =:

1. The value of 8 in 89 ……<…. The value of 8 in 3,458.

2. The place value of 7 in 745 …=… the place value of 9 in 1,948.

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You have to identify the Place of the Digit. (name of the room)

E.g. 345:

The place value of 4 is Tens or 10

Value

You have to identify the value of the digit according to its place.

E.g. 345:

The value of 4 is: 40 or 4 tens



3. 2 Ten Thousands ……<…… 6 Thousands.

2. Multiplying 2-digits numbers

ones x ones

ones x tens

Magic Zero

tens x ones

tens x tens

Add the Products

Example:

34

X 26

204 (6 X 34)

680 put 0 then (2 X 34)

884

1. 78 X 12 = 936

2. 24 X 68 = 1,632

3. 39 X 54 = 2,106

4. 92 X 14 = 1,288

Write the partial products of 64 X 72: (60 X 70) + (60 X 2) + (4 X 70) + (4 X 2)….

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3. Read and Write Numbers

Standard Form: 135,268

Word form: (in the word form, write it as you read it)

One hundred thirty five thousands, two hundred sixty eight.

Expanded Form: write the value of each digit. (To know the value, write the

place above each digit).

100,000 + 30,000 + 5,000 + 200 + 60 + 8.

The comma: count after each three digits from the right side and place the

comma.

Answer the following questions:

a. Write this number 390,568 in two other forms:

Word form Three Hundred ninety Thousand, five hundred sixty eight.

……………………………………………………………………………………..

Expanded Form: 300,000 + 90,000 + 500 + 60 + 8

b. Write the standard form of 70,000 + 3,000 + 200 + 9

73,209

c. Write the Expanded form of fifty thousands, nine hundreds ninety two.

50,000 + 900 + 90 + 2

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4. Rounding

Steps:

1- Find your place.

2- Look next door (to the right side).

3- 5 or more raise the score of your place.

4- 4 or less keep your number as it is.

5- All numbers on the right side will be zeros.

6- All numbers on the left side will be the same.

Example:

Round number 23,690 to the nearest thousands.

My place 23,690

Next door 23,690 more than 5 so raise the score of my digit.

24,000

Same Numbers on the right side will be zeros.

3,000 will be 4,000

Answer the following:

a) 237,864 rounded to the nearest ten thousands is 240,000b) 78,725 rounded to the nearest hundred is 78,700c) 450,954 rounded to the nearest thousand is 451,000d) 9,624 rounded to the nearest thousand is 10,000e) Round of 257,982 is 257,980

Bonus:

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If 250,000 is rounded to the nearest ten thousands. Can you find the actual

number? 249,345

5. Rename Numbers

(Same number but with a different name)

2 thousand = 2,000 3 thousands = …… hundreds

000 3,000 = 30 hundreds

2,000 = 20 hundreds

00

Examples:

24 hundreds = 2th4h0t0o = 2 Thousands, 4 hundreds. 25000 = 250 hundreds 630 = 63 tens

Th H T O

4 thousands + 9 hundreds = 4 , 9 0 0 = 49 hundreds = 490 Tens

Complete:

a) 67000 = 670. Hundreds

b) 490 hundreds = 49. Thousands

c) 5 hundred + 2 Tens = 520…

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Remember that:

Tens = 0

Hundred = 00

Thousand = 000

Ten Thousands = 0,000

Hundred Thousand = 00,000



d) 3 thousand, 7 hundred = …370… tens

e) 7400 = ……7… thousands + …4… hundreds

f) 91000 = …91…Thousands

6. Estimated Products

Find the estimated products:

234 200 35 40 x 3 x 3 x 23 x 20 600 800

Ex: 39,578 x 4 = 40,000 x 4 = 160,000 Ex: 17 x 73 = 20 x 70 = 1,400

Find the estimated products:

1. 1,923 x 4 = 8,000

2. 45 x 62 = 3000

3. 19 x 84 = 1600

4. 253 x 54 = 15000

5. 29,648 x 5 = 150,000 Color and have fun

6. 325 x 84 = 24,000

7. 2 x 678 = 1400

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Review Questions

Choose the correct answer:

1) The value of digit 8 in 285,342 is ………………..

a. 800,000 b. 80,000 c. 8,000 d. 800

2) The place value of digit 4 in 243,908 is ………………..

a. Millions b. Hundred thousand

c. Ten thousand d. Thousand

3) The number 827,533 is rounded as ………………… to the nearest hundred

thousand.

a. 900,000 b. 830,000 c. 820,000 d. 800,000

4) The expanded form of forty five thousand, two hundred eight is ……………

a. 400,000 + 50,000 + 200 + 80 b. 40,000 + 5,000 + 200 + 80

c. 400,000 + 50,000 + 20 + 8 d. 40,000 + 5,000 + 200 + 8

5) The product of 7,254 and 3 is ………………..

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a. 20,000 b. 20,762 c. 21,000 d. 21,762

6) The estimated product of 82 x 37 is equal to ………………..

a. 2,000 b. 2,200 c. 2,400 d. 3,200

7) The product of 24 x 22 is equal to ………………..

a. 500 b. 512 c. 528 d. 532

8) To multiply 8,259 x 6 using expanded form, your expression is

………………..

a. 8,000 + 200 + 50 + 9 b. 6 x (8 x 2 x 5 x 9)

c. 6 x (8,000 + 200 + 50 + 9) d. 600 x (8,000 + 200 + 50 + 9)

9) 45 ten thousands can be renamed as ………………..

a. 4,500 b. 45,000 c. 450,000 d. 4,500,000

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Solve the following:

1) Write the following number in two other forms: 43,592

Expanded form: 40,000 + 3,000 + 500 + 90 + 2

Word form: forty three thousands, five hundred ninety two.

2) 193,458 + 142,701 = 336,159

3) 403,298 – 345,162 = 58,136

4) The value of digit 5 in 25,309 is 5,000

5) The place value of digit 4 in 320,461 is hundred

6) The product of 2,497 and 6 is 14,982

7) The number 208,452 is rounded as 208,000.. to the nearest thousand.

Compare using >,< or =

1) Three thousand, five hundred sixty <. 3,506

2) Value of 4 in 2,482 >…. Value of 4 in 34,192

3) 5 thousands …<. 50 x 10

4) 20 x 5 …<…. 1 tens

5) 250 x 4 …=…. Thousand

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Problem Solving:

1) Lisa read that the oranges will be good for her. She went to buy them and

found that 1 orange weighs 258 grams. What is the total weight of 8

oranges?

258 X 8 = 2,064

2) Yassin and Hamza are going to the movies with their friends. Yassin bought

10 tickets, each for 35 pounds. Hamza bought 15 buckets of popcorn, each

for 12 pounds. How much more money did Yassin spend than Hamza?

Yassin spent : 10 x 35 = 350

Hamza spent: 15 X 12 = 180

The difference: 350 – 180 = 170

3) Malak went to the mall to buy clothes. She bought a jacket for 1,450 pounds,

pants for 1,220 pounds and sunglasses for 2,595 pounds. What is the total

amount of money she spent on clothes?

1,450 + 1,220 + 2,595 = 5,265.

4) Zeina read 253 pages in 1 day. About how many pages will she read in 25

days?

253 x 25 = ……….

300 X 30 = 9,000

Best of luck

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