Math practice worksheet with problems on rounding, multiplication, and number forms.

Let’s go through each problem one by one, step by step. I’ll solve them carefully and check my work as I go.

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1) Give the place value of the 6 in 12,045.

Wait — look at the number: 12,045.
Digits: 1 (ten thousands), 2 (thousands), 0 (hundreds), 4 (tens), 5 (ones).
There is no 6 in 12,045!
This might be a typo. Maybe it was meant to be 12,645? Let’s assume that for now, since otherwise the question doesn’t make sense.

If the number is 12,645, then:
- 1 → ten thousands
- 2 → thousands
- 6 → hundreds
- 4 → tens
- 5 → ones

✔ So if it’s 12,645, the 6 is in the hundreds place.

But wait — let me double-check the original image description. The user wrote “12,045” — but maybe it’s actually “12,645”? Since there’s no 6 in 12,045, this must be an error. In many worksheets, numbers like this are common. I’ll proceed assuming it’s 12,645.

→ Place value of 6 = hundreds

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2) Round 3,734 to the nearest thousand.

Look at the thousands digit: 3 (in 3,734)
Next digit (hundreds place): 7
Since 7 ≥ 5, we round up.

So 3,734 → rounds to 4,000

✔ Correct.

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3) Compare: 6451 ___ 6332

Compare digit by digit from left:

- Thousands: both 6 → same
- Hundreds: 4 vs 3 → 4 > 3

So 6451 > 6332

✔ Answer: >

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4) Circle one: Prime or Composite 55

Prime = only divisible by 1 and itself
Composite = has more than two factors

55 ÷ 5 = 11 → so 5 × 11 = 55 → has factors other than 1 and 55 → composite

✔ Circle: Composite

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5) 85,883 + 72,345

Add:

```
85,883
+ 72,345
--------
```

Start from right:

3 + 5 = 8
8 + 4 = 12 → write 2, carry 1
8 + 3 + 1 = 12 → write 2, carry 1
5 + 2 + 1 = 8
8 + 7 = 15 → write 15

So: 158,228

Check with calculator-style:

85,883 + 72,345 =
85,000 + 72,000 = 157,000
883 + 345 = 1,228
Total: 157,000 + 1,228 = 158,228

✔ Correct.

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6) 92,948 - 46,643

Subtract:

```
92,948
- 46,643
--------
```

8 - 3 = 5
4 - 4 = 0
9 - 6 = 3
2 - 6 → can’t do → borrow from 9 → becomes 12 - 6 = 6, and 9 becomes 8
8 - 4 = 4

Wait — let’s do it properly:

Thousands column: 2 - 6 → need to borrow.

Actually:

Write it out:

92,948
- 46,643
= ?

From right:

8 - 3 = 5
4 - 4 = 0
9 - 6 = 3
2 - 6 → can’t → borrow from 9 (ten-thousands)

So 9 becomes 8, and 2 becomes 12 → 12 - 6 = 6
Then 8 - 4 = 4

So result: 46,305

Check: 46,643 + 46,305 = ?

46,643 + 46,305 =
46,000 + 46,000 = 92,000
643 + 305 = 948
Total: 92,948 ✔

✔ Correct: 46,305

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7) Solve for the rule and finish the pattern: 12, 24, 36, 48, ___, ___

Each number increases by 12.

12 + 12 = 24
24 + 12 = 36
36 + 12 = 48
48 + 12 = 60
60 + 12 = 72

Rule: Add 12

✔ Next two: 60, 72

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8) Give the first four multiples for 6.

Multiples of 6: 6×1, 6×2, 6×3, 6×4

→ 6, 12, 18, 24

✔ First four: 6, 12, 18, 24

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9) Give the factors for 36.

Factors = numbers that divide 36 evenly.

List pairs:

1 × 36
2 × 18
3 × 12
4 × 9
6 × 6

So all factors: 1, 2, 3, 4, 6, 9, 12, 18, 36

✔ List: 1, 2, 3, 4, 6, 9, 12, 18, 36

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10) Multiply: 21 × 15

Break it down:

21 × 15 = 21 × (10 + 5) = (21×10) + (21×5) = 210 + 105 = 315

Or:

21
× 15
----
105 ← 21×5
+210 ← 21×10 (shifted)
----
315

✔ 315

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11) 3,000 is ___ times as many as 30.

How many times does 30 go into 3,000?

3,000 ÷ 30 = ?

Divide: 3,000 ÷ 30 = 100

Because 30 × 100 = 3,000

✔ Answer: 100

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12) Circle even or odd: 51

Even = ends in 0,2,4,6,8
Odd = ends in 1,3,5,7,9

51 ends in 1 → odd

✔ Circle: odd

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13) Write 12,451 in:

a) Expanded Form:
Break by place value:

10,000 + 2,000 + 400 + 50 + 1

b) Word Form:
Twelve thousand, four hundred fifty-one

✔
Expanded: 10,000 + 2,000 + 400 + 50 + 1
Word: Twelve thousand, four hundred fifty-one

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14) Multiply:

a) 71 × 10 = 710
b) 71 × 100 = 7,100
c) 71 × 1,000 = 71,000

(Just add zeros!)

✔ Answers:
710
7,100
71,000

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15) Round 342 + 237 = ?

First, add: 342 + 237

342 + 200 = 542
542 + 37 = 579

Now, round 579 to nearest... what? The problem says “Round 342 + 237 =”, but doesn’t specify to what place.

Looking back at the worksheet format — probably expects rounding to nearest hundred? Or maybe just compute and leave? But it says “Round”.

In context of other problems, likely round to nearest hundred.

579 → nearest hundred: look at tens digit (7) → 7≥5 → round up → 600

Alternatively, maybe they want you to round each number first?

Sometimes “round then add”:

342 → 300
237 → 200
Sum: 500

But that’s less accurate.

The problem says “Round 342 + 237 =”, which probably means compute sum, then round.

I think safest is to compute sum = 579, then round to nearest hundred → 600

But let’s see — in some curricula, they teach to round before adding for estimation.

However, since it says “Round [sum]”, I’ll go with computing first.

✔ Final answer: 600 (rounded to nearest hundred)

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16) What is the value of the 8 in 7,835?

Number: 7,835

Place values:

7 → thousands
8 → hundreds
3 → tens
5 → ones

So value of 8 is 800

✔ 800

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Now, compiling all answers clearly:

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Final Answer:

1) hundreds (assuming number is 12,645 — since 12,045 has no 6)
2) 4,000
3) >
4) Composite
5) 158,228
6) 46,305
7) Rule: Add 12; next numbers: 60, 72
8) 6, 12, 18, 24
9) 1, 2, 3, 4, 6, 9, 12, 18, 36
10) 315
11) 100
12) odd
13) Expanded: 10,000 + 2,000 + 400 + 50 + 1; Word: Twelve thousand, four hundred fifty-one
14) 710; 7,100; 71,000
15) 600 (after rounding 579 to nearest hundred)
16) 800