Motorbikes | Cars | Total number of wheels | |
---|---|---|---|
10 | 11 | 10 × 2 + 11 × 4 = 64 | (too many wheels → need fewer cars) |
12 | 9 | 12 × 2 + 9 × 4 = 60 | (too many wheels → need fewer cars) |
14 | 7 | 14 × 2 + 7 × 4 = 56 | (too many wheels → need fewer cars) |
15 | 6 | 15 × 2 + 6 × 4 = 54 | This matches with what Paul told you. |
Tens | Units | Tenths | Hundredths | Thousandths |
---|---|---|---|---|
10 | 1 |
× | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
2 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 |
3 | 3 | 6 | 9 | 12 | 15 | 18 | 21 | 24 | 27 | 30 | 33 | 36 |
4 | 4 | 8 | 12 | 16 | 20 | 24 | 28 | 32 | 36 | 40 | 44 | 48 |
5 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 |
6 | 6 | 12 | 18 | 24 | 30 | 36 | 42 | 48 | 54 | 60 | 66 | 72 |
7 | 7 | 14 | 21 | 28 | 35 | 42 | 49 | 56 | 63 | 70 | 77 | 84 |
8 | 8 | 16 | 24 | 32 | 40 | 48 | 56 | 64 | 72 | 80 | 88 | 96 |
9 | 9 | 18 | 27 | 36 | 45 | 54 | 63 | 72 | 81 | 90 | 99 | 108 |
10 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 |
11 | 11 | 22 | 33 | 44 | 55 | 66 | 77 | 88 | 99 | 110 | 121 | 132 |
12 | 12 | 24 | 36 | 48 | 60 | 72 | 84 | 96 | 108 | 120 | 132 | 144 |
Mathematical operation | Calculator button | Computer keyboard key |
---|---|---|
+ | Shift and ‘=’ on the main keyboard or ‘+’ on the number pad | |
− | ‘−’ (the key to the left of ‘=’) on the main keyboard or on the number pad | |
× | Shift and ‘8’ on the main keyboard or ‘*’ on the number pad | |
÷ | ‘/’ on the main keyboard or on the number pad | |
= | Enter | |
Clear | Backspace (as often as needed to clear all entries) |
Across | Down |
---|---|
1. 21 × 47 | 1. 19 × 5 |
4. 1788 ÷ 6 | 2. 8003 × 9 |
6. 497 – 105 + 12 | 3. 1234 – 1216 |
7. 1458 ÷ 3 × 2 | 5. 1 + 11 + 111 – 29 |
9. 32 + 681 – 13 | 6. 517 ÷ 11 |
7. 21 × 33 ÷ 7 | |
8. 49 + 49 – 48 |
Across | Down |
---|---|
1. 21 × 47 = 987 | 1. 19 × 5 = 95 |
4. 1788 ÷ 6 = 298 | 2. 8003 × 9 = 72027 |
6. 497 – 105 + 12 = 404 | 3. 1234 – 1216 = 18 |
7. 1458 ÷ 3 × 2 = 972 | 5. 1 + 11 + 111 – 29 = 94 |
9. 32 + 681 – 13 = 700 | 6. 517 ÷ 11 = 47 |
7. 21 × 33 ÷ 7 = 99 | |
8. 49 + 49 – 48 = 50 |
I know: | I want: |
---|---|
The attic is approximately 825 cm by 900 cm. | To find the cheaper option |
Each joist is 5 cm wide. | |
There are 17 joists. | |
The insulation fits perfectly between the joists. | |
A £200 grant is available. | |
The cheapest quote from a contractor is £650. | |
The insulation comes in rolls that are 40 cm wide and 800 cm long. | |
Each roll costs £15 but there is a special 3 for 2 offer at the moment. | |
I need safety glasses, a face mask and gloves costing £40 to install the insulation. |
Three quarters of Yorkshire’s residents plan to holiday in the region this year. (Snowdon, 2021)
Mathematical operation | Calculator button | Keyboard key |
---|---|---|
Negative number | The − (minus) key |
Calculation | Answer | Calculation | Answer |
---|---|---|---|
2 × 4 | 2 × (–4) | ||
1 × 4 | 1 × (–4) | ||
0 × 4 | 0 × (–4) | ||
(–1) × 4 | (–1) × (–4) | ||
(–2) × 4 | (–2) × (–4) | ||
(–3) × 4 | (–3) × (–4) |
Calculation | Answer | Calculation | Answer |
---|---|---|---|
2 × 4 | 8 | 2× (–4) | –8 |
1 × 4 | 4 | 1 × (–4) | –4 |
0 × 4 | 0 | 0 × (–4) | 0 |
(–1) × 4 | –4 | (–1) × (–4) | 4 |
(–2) × 4 | –8 | (–2) × (–4) | 8 |
(–3) × 4 | –12 | (–3) × (–4) | 12 |
Calculation | Answer | Calculation | Answer |
---|---|---|---|
2 × 4 | 8 | 2× (–4) | –8 |
1 × 4 | 4 | 1 × (–4) | –4 |
0 × 4 | 0 | 0 × (–4) | 0 |
(–1) × 4 | –4 | (–1) × (–4) | 4 |
(–2) × 4 | –8 | (–2) × (–4) | 8 |
(–3) × 4 | –12 | (–3) × (–4) | 12 |
(–1)2 | |
(–1)3 | |
(–1)4 | |
(–1)5 | |
(–1)6 | |
(–2)2 | |
(–2)3 | |
(–2)4 | |
(–2)5 | |
(–2)6 |
(–1)2 | 1 |
(–1)3 | –1 |
(–1)4 | 1 |
(–1)5 | –1 |
(–1)6 | 1 |
(–2)2 | 4 |
(–2)3 | –8 |
(–2)4 | 16 |
(–2)5 | –32 |
(–2)6 | 64 |