High School

1. If 1545 - 789 = 756, then 15450 - 7890 = ?

2. If 99999 - 55555 = 44444, then 99999 - 44444 = ?

3. If 73892 - 41361 = 32531, then 73892 - 32531 = ?

4. If 49311 - 29000 = 20311, then 20311 + 29000 = ?

5. If 53795 - 23125 = 30670, then 23125 + 30670 = ?

6. If 18720 - 9420 = 9300, then 9300 + 9420 = ?

7. If 80808 - 26230 = 54578, then 26230 + 54578 = ?

8. If 230644 - 143672 = 86972, then 143672 + 86972 = ?

9. If 175000 - 125000 = 50000, then 125000 + 50000 = ?

Place the correct sign (>, <, or =) in the box.

- 3999 - 999 ___

- 7000 - 1000 ___

- 3286 - 1286 ___

- 6000 - 4000 ___

- 697 + 3 - 200 ___

- 900 - 500 ___

- 10 + 67784 ___

- 67784 - 100 ___

- 900 + 0 + 73400 ___

- 73400 + 900 ___

- 10 + 100 + 1000 ___

- 1111 + 1 ___

- 9999 + 1 ___

- 10000 - 9 ___

Answer :

Let's take a look at each pair of expressions and determine the correct comparison using >, <, or = signs.

  1. [tex]3999 - 999[/tex] vs [tex]7000 - 1000[/tex]:

    • Calculate [tex]3999 - 999 = 3000[/tex].
    • Calculate [tex]7000 - 1000 = 6000[/tex].
    • Since [tex]3000 < 6000[/tex], the correct sign is \(<\).

  2. [tex]3286 - 1286[/tex] vs [tex]6000 - 4000[/tex]:

    • Calculate [tex]3286 - 1286 = 2000[/tex].
    • Calculate [tex]6000 - 4000 = 2000[/tex].
    • Both expressions evaluate to 2000, so the correct sign is \(=\).

  3. [tex]697 + 3 - 200[/tex] vs [tex]900 - 500[/tex]:

    • Calculate [tex]697 + 3 = 700[/tex], then [tex]700 - 200 = 500[/tex].
    • Calculate [tex]900 - 500 = 400[/tex].
    • Since [tex]500 > 400[/tex], the correct sign is \(>\).

  4. [tex]10 + 67784[/tex] vs [tex]67784 - 100[/tex]:

    • Calculate [tex]10 + 67784 = 67794[/tex].
    • Calculate [tex]67784 - 100 = 67684[/tex].
    • Since [tex]67794 > 67684[/tex], the correct sign is \(>\).

  5. [tex]900 + 0 + 73400[/tex] vs [tex]73400 + 900[/tex]:

    • Both expressions are equal to [tex]900 + 0 + 73400 = 74300[/tex] and [tex]73400 + 900 = 74300[/tex].
    • So, the correct sign is \(=\).

  6. [tex]10 + 100 + 1000[/tex] vs [tex]1111 + 19999 + 1[/tex]:

    • Calculate [tex]10 + 100 + 1000 = 1110[/tex].
    • Calculate [tex]1111 + 19999 + 1 = 21111[/tex].
    • Since [tex]1110 < 21111[/tex], the correct sign is \(<\).

In these comparisons, you will determine which number is larger or if they are equal by performing basic arithmetic calculations on each pair.

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