Q1.
5. Find the multiplication and division sentences below. Shade the sentences. How many can you find? Some are done for you. (250 × 4 = 1000, 50 × 20 = 1000, 525 ÷ 5 = 105)
Answer
The number square as printed in the book.
All fifteen sentences shaded.
| 134 | 52 | 30 | 31 | 931 | 10 | 93 | 55 |
| 5 | 20 | 15 | 15 | 250 | 3 | 33 | 101 |
| 22 | 1040 | 450 | 0 | 4 | 26 | 104 | 5555 |
| 110 | 100 | 50 | 20 | 1000 | 60 | 16 | 99 |
| 44 | 104 | 19 | 3 | 6 | 22 | 132 | 7 |
| 20 | 6 | 950 | 6 | 6000 | 30 | 200 | 693 |
| 808 | 624 | 31 | 14 | 1200 | 8 | 16 | 24 |
| 35 | 9 | 525 | 5 | 105 | 62 | 3200 | 78 |
Read three boxes in a row (left to right) or in a column (top to bottom). The book has already shaded three. Here are 12 more:
- 52 × 20 = 1040 (down, column 2)
- 30 × 15 = 450 (down, column 3)
- 55 × 101 = 5555 (down, column 8)
- 5 × 22 = 110 (down, column 1)
- 4 × 26 = 104 (across, row 3)
- 50 × 19 = 950 (down, column 3)
- 1000 × 6 = 6000 (down, column 5)
- 99 × 7 = 693 (down, column 8)
- 104 × 6 = 624 (down, column 2)
- 6 × 22 = 132 (across, row 5)
- 6000 ÷ 30 = 200 (across, row 6)
- 200 × 16 = 3200 (down, column 7)
With the three already done, that makes 15 sentences in all. The shaded boxes are shown below.
| 134 | 52 | 30 | 31 | 931 | 10 | 93 | 55 |
| 5 | 20 | 15 | 15 | 250 | 3 | 33 | 101 |
| 22 | 1040 | 450 | 0 | 4 | 26 | 104 | 5555 |
| 110 | 100 | 50 | 20 | 1000 | 60 | 16 | 99 |
| 44 | 104 | 19 | 3 | 6 | 22 | 132 | 7 |
| 20 | 6 | 950 | 6 | 6000 | 30 | 200 | 693 |
| 808 | 624 | 31 | 14 | 1200 | 8 | 16 | 24 |
| 35 | 9 | 525 | 5 | 105 | 62 | 3200 | 78 |
Why it happens: Take any three boxes in a line and test them: does the first times the second give the third? Or does the first divided by the second give the third?
Tip: Keep a clean copy of the square. Shade one sentence, then look again — some boxes are used by two different sentences.