Mental Maths Test Year 4 Worksheets - Free Printable

Let's go through each question and its solution step by step:

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1. \( 500 + 4 + 70 \)

- Add the numbers step by step:
\[
500 + 4 = 504
\]
\[
504 + 70 = 574
\]
- Answer: \( 574 \)

---

2. Half of 30

- Divide 30 by 2:
\[
30 \div 2 = 15
\]
- Answer: \( 15 \)

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3. What is this triangle called?

- The triangle has one right angle (90 degrees). Triangles with one right angle are called right triangles.
- Answer: Right angle triangle or right triangle

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4. \( 30 - 16 \)

- Subtract 16 from 30:
\[
30 - 16 = 14
\]
- Answer: \( 14 \)

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5. What is the value of the digit 7 in the number 1726?

- The digit 7 is in the hundreds place. The value of a digit in the hundreds place is calculated as:
\[
7 \times 100 = 700
\]
- Answer: \( 700 \)

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6. Double 14

- Multiply 14 by 2:
\[
14 \times 2 = 28
\]
- Answer: \( 28 \)

---

7. \( 5 \times 6 \)

- Multiply 5 by 6:
\[
5 \times 6 = 30
\]
- Answer: \( 30 \)

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8. Write down all the odd numbers from the list below: \( 42, 37, 21, 26, 38, 63 \)

- Identify the odd numbers in the list:
- 42: Even
- 37: Odd
- 21: Odd
- 26: Even
- 38: Even
- 63: Odd
- The odd numbers are: \( 37, 21, 63 \)
- Answer: \( 37, 21, 63 \)

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9. Round 67 to the nearest 10

- Determine the nearest multiple of 10:
- 67 is closer to 70 than to 60.
- Answer: \( 70 \)

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10. What number comes halfway between 30 and 50?

- Calculate the midpoint between 30 and 50:
\[
\text{Midpoint} = \frac{30 + 50}{2} = \frac{80}{2} = 40
\]
- Answer: \( 40 \)

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11. How many FIVES make 30p?

- Each "FIVE" is worth 5p. To find how many 5p coins make 30p:
\[
30 \div 5 = 6
\]
- Answer: \( 6 \)

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12. The time is 4:30 pm. What will the time be in half an hour?

- Add 30 minutes to 4:30 pm:
\[
4:30 \text{ pm} + 30 \text{ minutes} = 5:00 \text{ pm}
\]
- Answer: \( 5:00 \text{ pm} \)

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13. How much money is 3 TENS and 3 FIVES?

- Each "TEN" is worth 10p, and each "FIVE" is worth 5p:
\[
3 \times 10 = 30 \text{ pence}
\]
\[
3 \times 5 = 15 \text{ pence}
\]
\[
30 + 15 = 45 \text{ pence}
\]
- Answer: \( 45 \text{ p} \)

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14. What fraction of this shape is shaded?

- The shape is divided into 5 equal parts, and 3 parts are shaded:
\[
\text{Fraction shaded} = \frac{\text{Number of shaded parts}}{\text{Total number of parts}} = \frac{3}{5}
\]
- Answer: \( \frac{3}{5} \)

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15. I am facing north. I turn 2 half turns. Which way am I facing now?

- A half turn is 180 degrees. Two half turns mean:
\[
2 \times 180^\circ = 360^\circ
\]
- A 360-degree turn brings you back to your original direction.
- Answer: North

---

16. How many cm in 7 metres?

- There are 100 centimeters in 1 meter. Therefore:
\[
7 \text{ meters} \times 100 = 700 \text{ cm}
\]
- Answer: \( 700 \)

---

Final Answer Summary:

\[
\boxed{
\begin{array}{ll}
1. & 574 \\
2. & 15 \\
3. & \text{Right angle triangle or right triangle} \\
4. & 14 \\
5. & 700 \\
6. & 28 \\
7. & 30 \\
8. & 37, 21, 63 \\
9. & 70 \\
10. & 40 \\
11. & 6 \\
12. & 5:00 \text{ pm} \\
13. & 45 \text{ p} \\
14. & \frac{3}{5} \\
15. & \text{North} \\
16. & 700 \\
\end{array}
}
\]