Free Printable 3rd Grade Math Review Worksheet - Free Printable

Let's go through each section of the worksheet and solve the problems step by step.

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Week 1 Day 1

#### 1. Addition Problems
Left Column:
```
45
43
50
+24
-----
```
Add vertically:
- 45 + 43 = 88
- 88 + 50 = 138
- 138 + 24 = 162

✔ Answer: 162

Right Column:
```
25
43
23
+ 9
-----
```
Add:
- 25 + 43 = 68
- 68 + 23 = 91
- 91 + 9 = 100

✔ Answer: 100

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#### 2. Count shaded squares by 2s to determine if even or odd

There is a rectangle with 2 rows and 6 columns (total 12 squares), and 10 are shaded.

Counting by 2s:
2, 4, 6, 8, 10 → we reach exactly 10 shaded squares.

Since we can count all shaded squares in pairs (no leftover), it’s even.

✔ Answer: Even
Explanation: Because you can group the shaded squares into 5 pairs (each pair = 2), and there’s no square left over.

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#### 3. Divide the rectangle into 4 rows with 3 equal-sized squares in each row

We need to draw 4 rows, each with 3 squares.

So total units = 4 × 3 = 12

✔ # of units: 12

(You would draw 4 horizontal lines dividing the rectangle into 4 parts, then divide each part into 3 columns.)

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#### 4. Use repeated addition for the array

There are 3 rows and 4 columns of star-like shapes.

Each row has 4 stars.

Repeated addition:
4 + 4 + 4 = 12

✔ Answer: 4 + 4 + 4 = 12

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#### 5. Show 8:00 on each clock

Draw the hour hand pointing at 8, and the minute hand pointing at 12.

In the digital box above the clock, write: 8:00

✔ Digital time: 8:00
Analog: Hour hand on 8, minute hand on 12.

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Week 1 Day 2

#### 1. Jack has 4236 baseball cards

a) What is the value of the 2 in 4236?

The number 4236:
- 4 = thousands
- 2 = hundreds
- 3 = tens
- 6 = ones

So the 2 is in the hundreds place → value = 200

✔ Answer: 200

b) He sold 345 cards. How many does he have left?

Subtract:
4236 - 345 = ?

Break it down:
- 4236 - 300 = 3936
- 3936 - 40 = 3896
- 3896 - 5 = 3891

✔ Answer: 3891

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#### 2. Layke is counting by 5s

Sequence:
165, 170, 175, 180, 185, 190, 195, 200, 25, 210, 215, 220

She skipped from 200 to 25 — that’s not increasing by 5.

After 200 should be 205, then 210, etc.

So she messed up at 25.

✔ Circle 25
What should she have written? 205

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#### 3. Circle the expressions that are true

Check each:

- 546 > 849 → False (546 < 849)
- 658 > 654 → True ✔
- 435 < 834 → True ✔
- 345 = 543 → False

✔ True expressions: 658 > 654 and 435 < 834

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#### 4. Circle the pentagons

Pentagon = 5 sides

Look at the shapes:

- Top left: 5 sides → ✔ Pentagon
- Top middle: 5 sides → ✔ Pentagon
- Top right: 8 sides → ✘ Octagon
- Middle left: 5 sides → ✔ Pentagon
- Middle bottom: 3 sides → ✘ Triangle
- Bottom left: 6 sides → ✘ Hexagon
- Bottom right: 5 sides → ✔ Pentagon
- Bottom center: 4 sides → ✘ Square

✔ Pentagons: Top left, top middle, middle left, bottom right

Circle those four.

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✔ Final Answers Summary:

#### Week 1 Day 1
1. Left column: 162
Right column: 100
2. Shaded squares: Even – because 10 is divisible by 2 (can be paired).
3. Rectangle: Draw 4 rows × 3 squares → 12 units
4. Repeated addition: 4 + 4 + 4 = 12
5. Clock: Show 8:00 (hour hand on 8, minute on 12)

#### Week 1 Day 2
1. Value of 2 in 4236: 200
Cards left: 3891
2. Mistake: Circle 25, should be 205
3. True expressions:
- ✔ 658 > 654
- ✔ 435 < 834
4. Pentagon shapes: Circle the four 5-sided figures

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Let me know if you'd like this formatted as a printable answer key!