High School

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WORKING WITH WHOLE NUMBERS

1. Make the number sentences below true. In the first block in each question, write a multiplication or division sign. In the second block, write either 10, 100, or 1000.
- (a) 8 [tex]$\square$[/tex] [tex]$\square$[/tex] [tex]$= 800$[/tex]
- (b) 740000 [tex]$\square$[/tex] [tex]$\square$[/tex] [tex]$= 740$[/tex]

2. Circle all the numbers given below that will round off to 60000.
- [tex]$\begin{array}{lllll} 62495 & 54498 & 65000 & 56002 & 67024 \end{array}$[/tex]

3. Calculate the following:
- (a) [tex]$274561 + 367238$[/tex]
- (b) [tex]$4672 - 3937$[/tex]
- (c) [tex]$3458 \times 43$[/tex]
- (d) [tex]$6624 \div 18$[/tex]

4. Write the missing numbers in the blocks.
- (a) [tex]$8 \cdot 15 \cdot 22 \cdot 29$[/tex] [tex]$\square$[/tex] (b)

Answer :

Sure! Let's tackle each part of the question step by step.

1. Working with Whole Numbers

(a) We need to make the number sentence `8 ☐ ☐ = 800` true. This involves either multiplying or dividing by 10, 100, or 1000. Let's try:

- If we use multiplication, 8 multiplied by 100 equals 800. So, the correct symbols are multiplication (`*`) and 100.

(b) We need to make `740000 ☐ ☐ = 740` true. This also involves either multiplying or dividing by 10, 100, or 1000. Let's try:

- If we use division, 740000 divided by 1000 equals 740. So, the correct symbols are division (`/`) and 1000.

2. Rounding Numbers

We will circle all numbers that round off to 60000. Rounding typically looks at the thousands place:

- 62495 rounds off to 62000 (not 60000).
- 54498 rounds off to 54000 (not 60000).
- 65000 stays 65000 (not 60000).
- 56002 rounds off to 56000 (not 60000).
- 67024 rounds off to 67000 (not 60000).

None of these numbers round to 60000.

3. Calculations

(a) For the addition: [tex]\(274561 + 367238 = 641799\)[/tex].

(b) For the subtraction: [tex]\(4672 - 3937 = 735\)[/tex].

(c) For the multiplication: [tex]\(3458 \times 43 = 148694\)[/tex].

(d) For the division: [tex]\(6624 \div 18 = 368\)[/tex].

4. Multiplication of Numbers

We need to find the product of these numbers: [tex]\(8 \times 15 \times 22 \times 29\)[/tex].

The calculated result is 76560.

These are your solutions for each part of the question. Let me know if you have any further questions!

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Rewritten by : Barada