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Worksheet for practicing multiplication by 10 with a grid of problems and a star icon.

A math worksheet titled "Multiplying by 10" with exercises for multiplying numbers by 10, including a table of multiplication problems and a star icon in the top left corner.

A math worksheet titled "Multiplying by 10" with exercises for multiplying numbers by 10, including a table of multiplication problems and a star icon in the top left corner.

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Show Answer Key & Explanations Step-by-step solution for: Multiplying by 10 | 3rd grade Math Worksheet | GreatSchools
Let’s solve this step by step.

We are multiplying numbers by 10.
When you multiply any number by 10, you just add a zero at the end of that number.
For example:
7 × 10 = 70
12 × 10 = 120
9 × 10 = 90
13 × 10 = 130

That matches what’s already filled in on the first line — good!

Now let’s do each row one by one.

---

Second section: Multiply each of these numbers by 10

6 → 60
14 → 140
12 → 120
17 → 170
25 → 250
9 → 90
15 → 150
13 → 130
2 → 20
23 → 230
8 → 80
24 → 240
18 → 180
20 → 200
22 → 220
5 → 50
3 → 30
26 → 260
11 → 110
27 → 270

---

Third section: Multiply each of these numbers by 10

20 → 200
12 → 120
12 → 120
14 → 140
6 → 60
23 → 230
2 → 20
13 → 130
15 → 150
9 → 90
22 → 220
26 → 260
24 → 240
19 → 190
1 → 10
25 → 250
11 → 110
28 → 280
3 → 30
5 → 50

---

Fourth section: Multiply each of these numbers by 10

50 → 500
48 → 480
62 → 620
30 → 300
30 → 300
68 → 680
51 → 510
56 → 560
65 → 650
52 → 520
95 → 950
65 → 650
55 → 550
22 → 220
40 → 400

Wait — there are two “65”s? Let me check the original image again (mentally). Yes, it says:

Row 1: 50, 48, 62, 30, 30
Row 2: 68, 51, 56, 65, 52
Row 3: 95, 65, 55, 22, 40

So yes, 65 appears twice — that’s fine. Both become 650.

---

Fifth section: Multiply each of these numbers by 10

10 → 100
62 → 620
45 → 450
56 → 560
74 → 740
32 → 320
69 → 690
82 → 820
63 → 630
95 → 950
61 → 610
32 → 320
99 → 990
60 → 600
72 → 720

Note: 32 appears twice — both become 320. That’s okay.

---

Now let’s write all answers clearly in order, matching the layout.

Final Answer:

First row (already done):
70, 120, 90, 130

Second block (left to right, top to bottom):
60, 140, 120, 170, 250,
90, 150, 130, 20, 230,
80, 240, 180, 200, 220,
50, 30, 260, 110, 270

Third block:
200, 120, 120, 140, 60,
230, 20, 130, 150, 90,
220, 260, 240, 190, 10,
250, 110, 280, 30, 50

Fourth block:
500, 480, 620, 300, 300,
680, 510, 560, 650, 520,
950, 650, 550, 220, 400

Fifth block:
100, 620, 450, 560, 740,
320, 690, 820, 630, 950,
610, 320, 990, 600, 720

All calculations checked — adding a zero to each number is correct for multiplying by 10.

Final Answer:
70, 120, 90, 130,
60, 140, 120, 170, 250, 90, 150, 130, 20, 230, 80, 240, 180, 200, 220, 50, 30, 260, 110, 270,
200, 120, 120, 140, 60, 230, 20, 130, 150, 90, 220, 260, 240, 190, 10, 250, 110, 280, 30, 50,
500, 480, 620, 300, 300, 680, 510, 560, 650, 520, 950, 650, 550, 220, 400,
100, 620, 450, 560, 740, 320, 690, 820, 630, 950, 610, 320, 990, 600, 720
Parent Tip: Review the logic above to help your child master the concept of multiply by 10 worksheet.
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