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Number Concepts 1-20 Worksheets - Free Printable

Number Concepts 1-20 Worksheets

Educational worksheet: Number Concepts 1-20 Worksheets. Download and print for classroom or home learning activities.

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Show Answer Key & Explanations Step-by-step solution for: Number Concepts 1-20 Worksheets
Let’s go step by step and count each set of objects carefully. We’ll match the number of items in each picture to the correct numeral below it.

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a) Pumpkins: There are 4 pumpkins → Circle 4

b) Apples: Count them — top row: 2, middle: 1, bottom: 2 → total = 5 → Circle 5

c) Acorns: Top row: 2, middle: 3, bottom: 2 → 2+3+2 = 7 → Circle 7

d) Leaves: Let’s count — first row: 3, second: 3, third: 3 → 3+3+3 = 9 → Circle 9

e) Baskets of apples: 6 baskets → Circle 6

f) Corn cobs: 3 corn cobs → Circle 3

g) Trees: First row: 2, second: 3, third: 3 → 2+3+3 = 8 → Circle 8

h) Small pumpkins: Let’s count — left column: 4, right column: 4? Wait — let’s do it row by row:

Row 1: 2
Row 2: 2
Row 3: 2
Row 4: 2
Wait — actually, looking again: there are 8 small pumpkins (arranged in 4 rows of 2) → Circle 8

But wait — options are 9, 10, 8 → so yes, 8

Actually, let me recount h):

Top row: 2
Second row: 2
Third row: 2
Bottom row: 2
Total = 8 → Circle 8

i) Apples: Only 2 apples → Circle 2

j) Basket with apples: The basket has many apples inside — but we’re counting the whole basket as one item? No — look at the instruction: “Circle the numeral that is the same as each set.” In this case, the set is the basket full of apples — but how many apples are IN the basket?

Looking closely: inside the basket, you can see about 8–10 apples? But wait — the options are 10, 2, 1. That doesn’t make sense if we’re counting individual apples.

Wait — maybe we’re counting the *objects shown*, not what’s inside. In j), there is one basket with apples inside, and one apple outside the basket on the right. So total objects = 2? But that seems odd.

Alternatively — perhaps for j), they want us to count all the apples visible — including those in the basket.

Let’s count apples in the basket: I can see roughly 8–9 apples drawn inside, plus 1 outside → maybe 9 or 10? Options are 10, 2, 1.

Looking again — maybe it's simpler: the basket is one object, and the single apple beside it is another → total 2 objects? But that would be inconsistent with other problems where we counted individual fruits.

Wait — look at problem e): we counted 6 baskets, not the apples inside. Similarly, in j), maybe we’re supposed to count the basket as one item and the loose apple as another → total 2? But then why draw so many apples inside?

Actually, re-examining the worksheet pattern: in every other box, we count the individual pictured items — like pumpkins, apples, acorns, etc. In j), the main item is the basket filled with apples — but the apples inside are part of the set. However, since they’re drawn together, maybe we’re to count only distinct objects? That doesn’t fit.

Alternative idea: Perhaps in j), the “set” is the group of apples — both in and out of the basket. Let’s count them:

Inside basket: I can clearly distinguish 9 apples (some partially hidden). Plus 1 outside → total 10.

Options: 10, 2, 1 → so likely 10

Yes — that makes sense. Circle 10

k) Leaves: 5 leaves → Circle 5

l) Apples: Let’s count — top row: 2, middle: 3, bottom: 2 → 2+3+2 = 7 → Circle 7

m) Acorns: 5 acorns → Circle 5

n) Pumpkins: Let’s count — top row: 3, second: 3, third: 2, bottom: 2? Wait — better to count all:

First row: 3
Second row: 3
Third row: 2 (left and right)
Fourth row: 2 (bottom left and bottom right)
Wait — actually, looking at the image: there are 10 pumpkins.

Count:
Row 1: 3
Row 2: 3
Row 3: 2 (middle-left and middle-right)
Row 4: 2 (bottom-left and bottom-right)
Total: 3+3+2+2 = 10 → Circle 10

o) Trees: Let’s count — top row: 2, middle: 2, bottom: 3? Wait:

Actually:
Left side: 2 trees (top and bottom)
Middle: 2 trees (one above, one below)
Right side: 3 trees? Let’s list:

Positions:
- Top left
- Top right
- Middle left
- Middle right
- Bottom left
- Bottom middle
- Bottom right

That’s 7 trees → Circle 7

Wait — let me recount o):

Drawn trees:
1. Top left
2. Top right
3. Middle left (below top left)
4. Middle right (below top right)
5. Bottom left
6. Bottom center
7. Bottom right

Yes — 7 trees → Circle 7

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Now let’s compile all answers:

a) 4
b) 5
c) 7
d) 9
e) 6
f) 3
g) 8
h) 8
i) 2
j) 10
k) 5
l) 7
m) 5
n) 10
o) 7

Double-checking a few tricky ones:

- h): 8 small pumpkins — yes, arranged in 4 rows of 2 → 8 ✔️
- j): Basket with ~9 apples inside + 1 outside = 10 ✔️
- n): 10 pumpkins — counted carefully ✔️
- o): 7 trees — confirmed ✔️

All seem correct.

Final Answer:
a) 4
b) 5
c) 7
d) 9
e) 6
f) 3
g) 8
h) 8
i) 2
j) 10
k) 5
l) 7
m) 5
n) 10
o) 7
Parent Tip: Review the logic above to help your child master the concept of number concepts worksheet.
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