Let's go through each question and explain the solution step by step:
---
1. \( 3 + 9 \)
-
Solution: Add the numbers.
\[
3 + 9 = 12
\]
-
Answer: \( 12 \)
---
2. Write down the next number: \( 18, 19, 20, 21, 22, 23, 24, \_\_ \)
-
Solution: The sequence is increasing by 1 each time. The next number after 24 is:
\[
24 + 1 = 25
\]
-
Answer: \( 25 \)
---
3. How many sides?
-
Image: A quadrilateral (specifically a trapezoid).
-
Solution: Count the number of sides in the shape.
- A quadrilateral has 4 sides.
-
Answer: \( 4 \)
---
4. \( 11 - 5 \)
-
Solution: Subtract the numbers.
\[
11 - 5 = 6
\]
-
Answer: \( 6 \)
---
5. Which number is missing from the number line?
-
Number line: \( 17, 18, 19, 20, 21, \_, 23 \)
-
Solution: The numbers are increasing by 1. The missing number between 21 and 23 is:
\[
21 + 1 = 22
\]
-
Answer: \( 22 \)
---
6. How many fish?
-
Image: There are 8 fish drawn.
-
Solution: Count the number of fish.
-
Answer: \( 8 \)
---
7. What number comes after 26?
-
Solution: The number immediately after 26 is:
\[
26 + 1 = 27
\]
-
Answer: \( 27 \)
---
8. How much money?
-
Image: One 10-pence coin and two 1-pence coins.
-
Solution: Add the values of the coins.
\[
10 \text{ pence} + 1 \text{ pence} + 1 \text{ pence} = 12 \text{ pence}
\]
-
Answer: \( 12 \text{p} \)
---
9. I have 10 bananas. I eat 3 of them. How many are left?
-
Solution: Subtract the number of bananas eaten from the total.
\[
10 - 3 = 7
\]
-
Answer: \( 7 \)
---
10. Sally has 5 cakes. She makes 2 more. How many does she have now?
-
Solution: Add the number of cakes she makes to the number she already has.
\[
5 + 2 = 7
\]
-
Answer: \( 7 \)
---
11. Draw the next shape in the sequence.
-
Sequence: \( \triangle, \square, \triangle, \square, \triangle, \square \)
-
Solution: The pattern alternates between a triangle and a square. The next shape after \( \square \) is:
\[
\triangle
\]
-
Answer: \( \triangle \)
---
12. Which number comes before 18?
-
Solution: The number immediately before 18 is:
\[
18 - 1 = 17
\]
-
Answer: \( 17 \)
---
Final Answer
\[
\boxed{12, 25, 4, 6, 22, 8, 27, 12p, 7, 7, \triangle, 17}
\]
Parent Tip: Review the logic above to help your child master the concept of mental math worksheet grade 2.
