Practice worksheets for number bonds with base-ten blocks and visual math exercises.

To solve these number bond problems, we need to understand that a number bond shows how numbers are split into parts. The top circle is the "whole" or total, and the two bottom boxes are the "parts."

Let's break down each problem shown in the image:

Left Page Problems:

1. Top Left (Blocks):
* We see a tower of 10 blocks and 2 separate blocks.
* The number bond already has 10 and 2 as the parts.
* To find the whole (top circle), add the parts: $10 + 2 = 12$.
* Answer for Top Circle: 12

2. Middle Left (Blocks):
* We see a tower of 10 blocks and 6 separate blocks.
* The number bond already has 10 and 6 as the parts.
* To find the whole (top circle), add the parts: $10 + 6 = 16$.
* Answer for Top Circle: 16

3. Bottom Left (Blocks):
* We see a tower of 10 blocks and 4 separate blocks.
* The number bond already has 10 and 4 as the parts.
* To find the whole (top circle), add the parts: $10 + 4 = 14$.
* Answer for Top Circle: 14

4. Top Right (Number Bond with 16):
* The whole is 16. One part is 6.
* To find the missing part, subtract the known part from the whole: $16 - 6 = 10$.
* Answer for Missing Box: 10

5. Middle Right (Number Bond with 13):
* The whole is 13. One part is 10.
* To find the missing part, subtract the known part from the whole: $13 - 10 = 3$.
* Answer for Missing Box: 3

6. Bottom Right (Number Bond with 18):
* The whole is 18. One part is 10.
* To find the missing part, subtract the known part from the whole: $18 - 10 = 8$.
* Answer for Missing Box: 8

Right Page Problems:

7. Top Left (Number Bond with 10 and 1):
* The parts are 10 and 1.
* To find the whole, add the parts: $10 + 1 = 11$.
* Answer for Top Circle: 11

8. Top Right (Number Bond with 14):
* The whole is 14. One part is 10.
* To find the missing part, subtract the known part from the whole: $14 - 10 = 4$.
* Answer for Missing Box: 4

9. Middle Left (Number Bond with 10 and 8):
* The parts are 10 and 8.
* To find the whole, add the parts: $10 + 8 = 18$.
* Answer for Top Circle: 18

10. Middle Right (Number Bond with 16):
* The whole is 16. One part is 10 (implied by the pattern, though cut off). Let's assume the other part is also needed. Wait, looking closely at crop 2, the right side shows "16" on top, and below it are two boxes. The left box is blank, the right box is partially visible but looks like it might be a 6 based on the left page's similar problem. Actually, let's look at the full image again.
* Ah, the middle right problem on the right page has "16" on top. Below it are two boxes. The left one is blank. The right one is cut off. However, looking at the pattern of these worksheets, it's likely asking to decompose 16 into 10 and something else. If we assume the standard "make ten" strategy, the parts would be 10 and 6. Since the left box is blank, let's calculate what goes there if the other part is 6 (matching the visual cue from the left page's similar problem). Or perhaps the right box is filled? It's too blurry. Let's re-examine.
* Actually, looking at the very first crop, the middle right problem on the right page has "16" on top. Below it, the left box is blank, and the right box is cut off. But wait, in the full image, you can see the right box has a number that looks like a '6' or maybe it's just empty. Let's look at the context. The worksheet is about teen numbers. So 16 is usually broken into 10 and 6. If the left box is blank, the answer is likely 10. If the right box is blank, the answer is 6. Given the layout, I'll provide both possibilities or focus on the clear ones.
* Let's look at the bottom left problem on the right page instead, which is clearer.

11. Bottom Left (Number Bond with 13):
* The whole is 13. One part is 3.
* To find the missing part, subtract the known part from the whole: $13 - 3 = 10$.
* Answer for Missing Box: 10

12. Bottom Right (Number Bond with 10):
* The whole is cut off, but one part is 10. This is likely another decomposition problem. Without the whole, we can't solve it definitively. But given the pattern, it's probably 10 plus something equals a teen number. For example, if the whole were 15, the other part would be 5. Since it's incomplete, I will skip this one in the final list unless I can infer more.

Let's compile the answers for the clearly solvable problems:

* Left Page, Top Left: Whole = 12
* Left Page, Middle Left: Whole = 16
* Left Page, Bottom Left: Whole = 14
* Left Page, Top Right: Missing Part = 10
* Left Page, Middle Right: Missing Part = 3
* Left Page, Bottom Right: Missing Part = 8
* Right Page, Top Left: Whole = 11
* Right Page, Top Right: Missing Part = 4
* Right Page, Middle Left: Whole = 18
* Right Page, Bottom Left: Missing Part = 10

The most prominent missing values are the ones in the empty circles and squares.

Final Answer:
Here are the completed number bonds:

Left Worksheet:
- Top Left: The whole is 12 (because 10 + 2 = 12)
- Middle Left: The whole is 16 (because 10 + 6 = 16)
- Bottom Left: The whole is 14 (because 10 + 4 = 14)
- Top Right: The missing part is 10 (because 16 - 6 = 10)
- Middle Right: The missing part is 3 (because 13 - 10 = 3)
- Bottom Right: The missing part is 8 (because 18 - 10 = 8)

Right Worksheet:
- Top Left: The whole is 11 (because 10 + 1 = 11)
- Top Right: The missing part is 4 (because 14 - 10 = 4)
- Middle Left: The whole is 18 (because 10 + 8 = 18)
- Bottom Left: The missing part is 10 (because 13 - 3 = 10)