Mental Maths Sheet 3:B6 featuring 16 math problems covering arithmetic, word problems, time, shapes, and comparisons.

Let's solve each question on the Mental Maths Sheet 3:B6 step by step and explain the reasoning.

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1) ___ – 7 = 9

We need to find a number that, when 7 is subtracted from it, gives 9.
So:
x – 7 = 9 → x = 9 + 7 = 16

✔ Answer: 16

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2) Who scored the fewest points?

Flame 712
Captain 579
Sally 383
Tyger 1297

Compare the scores:
- 383 (Sally) < 579 (Captain) < 712 (Flame) < 1297 (Tyger)

✔ Answer: Sally

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3) 3 × ___ = 21

We need to find what number multiplied by 3 gives 21.
21 ÷ 3 = 7

✔ Answer: 7

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4) What is the value of the digit 6 in the number 2681?

Break down 2681:
- 2000 (thousands)
- 600 (hundreds) ← digit 6 is in the hundreds place
- 80 (tens)
- 1 (ones)

So, 6 represents 600

✔ Answer: 600

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5) How much change from £1 if I spend 85p?

£1 = 100p
Change = 100p – 85p = 15p

✔ Answer: 15p

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6) How many minutes from the time on the clock until 11:40?

Look at the clock:
- The hour hand is between 10 and 11 → closer to 10
- The minute hand is pointing at 2 → 10 minutes past the hour
So the time shown is 10:10

Now calculate how many minutes from 10:10 to 11:40

From 10:10 to 11:10 = 60 minutes
From 11:10 to 11:40 = 30 minutes
Total = 60 + 30 = 90 minutes

✔ Answer: 90 minutes

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7) What is the next number? 175, 178, 181, 184, 187, ___

Look at the pattern:
175 → 178 (+3)
178 → 181 (+3)
181 → 184 (+3)
184 → 187 (+3)
So next: 187 + 3 = 190

✔ Answer: 190

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8) I walk at 3 miles per hour. How far can I walk in 4 hours?

Distance = Speed × Time
= 3 miles/hour × 4 hours = 12 miles

✔ Answer: 12 miles

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9) 15 – 7 = 10 – ___

First, 15 – 7 = 8
So: 10 – x = 8 → x = 10 – 8 = 2

✔ Answer: 2

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10) At a pizza party, Captain eats 1½ pizzas and Tyger eats 2½ pizzas. How much have they eaten in total?

Add:
1½ + 2½ = (1 + 2) + (½ + ½) = 3 + 1 = 4 pizzas

✔ Answer: 4 pizzas

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11) Find the difference between 3 fives and 3 threes.

3 fives = 3 × 5 = 15
3 threes = 3 × 3 = 9
Difference = 15 – 9 = 6

✔ Answer: 6

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12) Add up all the odd numbers together from the list: 16, 11, 1, 8, 10, 5

Odd numbers: 11, 1, 5
Sum = 11 + 1 + 5 = 17

✔ Answer: 17

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13) Which shape has no right angles?

Shapes:
- A: Trapezoid (looks like a slanted trapezium) — likely no right angles
- B: Rectangle — has 4 right angles
- C: Right triangle — has one right angle
- D: Trapezoid with a right angle visible (one corner looks square)

Only A appears to have no right angles.

✔ Answer: A

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14) Quadra sorts 16 socks into pairs. How many pairs will there be?

Each pair = 2 socks
Number of pairs = 16 ÷ 2 = 8

✔ Answer: 8

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15) The day is Tuesday. What day will it be in 10 days’ time?

Week has 7 days.
10 days = 7 + 3 → so it's 3 days after Tuesday

Tuesday → Wednesday (1) → Thursday (2) → Friday (3)

✔ Answer: Friday

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16) Which is heaviest?

10 ounces
10 grams
10 stone
10 kilograms

Convert all to same unit (e.g., grams):

- 10 grams = 10g
- 10 ounces ≈ 10 × 28.35 = 283.5g
- 10 kilograms = 10,000g
- 10 stone = 10 × 6.35kg = 63.5kg = 63,500g

So:
10 grams < 10 ounces < 10 kilograms < 10 stone

✔ Answer: 10 stone

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✔ Final Answers:

| Question | Answer |
|--------|--------|
| 1 | 16 |
| 2 | Sally |
| 3 | 7 |
| 4 | 600 |
| 5 | 15p |
| 6 | 90 minutes |
| 7 | 190 |
| 8 | 12 miles |
| 9 | 2 |
| 10 | 4 pizzas |
| 11 | 6 |
| 12 | 17 |
| 13 | A |
| 14 | 8 |
| 15 | Friday |
| 16 | 10 stone |

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