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# Matematik rekreasi

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### Matematik rekreasi

1. 1. MATEMATIK REKREASI
2. 2. THE DIGIT YOU ARE THINKING OF? <ul><li> Choose any one digit number  Multiply with 9 </li></ul><ul><li> Multiply with above number </li></ul><ul><li>Use calculator </li></ul>12 345 679 111111111? 1 digit from the answer
3. 3. MAGIC NUMBER <ul><li>Choose any one digit number </li></ul><ul><li>Multiply with 111 </li></ul><ul><li>Divide with the sum of the product digits </li></ul><ul><li>Use calculator </li></ul>The answer remains 37
4. 4. MAGIC NUMBER 11 <ul><li>Choose any 3 digit number </li></ul><ul><li>Repeat the number to become 6 digit </li></ul><ul><li>Divide with 7 </li></ul><ul><li>Divide with your 3 digit number </li></ul><ul><li>Divide with 13 </li></ul><ul><li>Your answer is always 11…! </li></ul><ul><li>Use calculator </li></ul>
5. 5. 365 1900 1957 1984 1994 1948 1963 1976 2020  4 366 LEAP YEAR
6. 6. WHAT ARE MY NUMBERS? <ul><li>Choose any three one digit numbers. </li></ul><ul><li>1) Multiply the first no. with 2, add 5, multiply with 5 and add 10. </li></ul><ul><li>2) Add with the second no., and multiply with 10. </li></ul><ul><li>3) Finally add the third number . </li></ul>350 ? 1 st x2, +5, x5, +10, +2 nd , x10, +3 rd -350
7. 7. WHAT IS MY 2 DIGITS NUMBER? 35? <ul><li>Write any two digit number. </li></ul><ul><li>Multiply tens digit with 2, add 1, multiply with 5 and add ones digit. </li></ul>Minus 5
8. 8. WHAT IS MY 3 DIGITS NUMBER? 456? <ul><li>Write any three digit number. </li></ul><ul><li>Multiply hundreds digit with 2, add 1, multiply with 5 and add tens digit, multiply with 10, add the ones digit =…… </li></ul>Minus 50
9. 9. WHAT IS MY NUMBER? <ul><li>Write any number. </li></ul><ul><li>Multiply the no. with 2, add 4, divide with 2 and add 13 =……. </li></ul>8,15 or 145.. ? Your number is……. - 15
10. 10. WHAT IS MY NUMBER? <ul><li>Write any number. </li></ul><ul><li>Multiply the no. with three, add eighteen, divide with three and add fourteen =……. </li></ul>1 435 ? Your number is……. - 20
11. 11. WHAT IS MY NUMBER? <ul><li>Write any number. </li></ul><ul><li>Multiply the no. with 5, add 6, Multiply with 4 and add 9. Finally Multiply with 5 =……. </li></ul>165 ? Your number is…….00 - 165 ignore 0
12. 12. <ul><li>Multiply with 3, add 7; </li></ul><ul><li>Multiply with 4 and add 12. </li></ul><ul><li>Multiply with 5; </li></ul><ul><li>Finally add 52 </li></ul>Your time is……. - 252,  60 1945 hours ? What is the time?
13. 13. <ul><li>Darab dengan 4 </li></ul><ul><li>Tambahkan bilangan hari sebulan (30) </li></ul><ul><li>Darabkan dengan 25 </li></ul><ul><li>Tolakkan bilangan hari dlm setahun (365) </li></ul>Nombor kenderaan anda ialah……. - 385  100 1758? Apakah nombor plat kenderaan saya?
14. 14. GELAS BERISI AIR? <ul><li>ATURKAN SEMULA GELAS SUPAYA BERKEDUDUKAN </li></ul><ul><li>BERSELANG SELI BERISI DAN TIDAK BERISI; </li></ul><ul><li>DENGAN SYARAT; </li></ul><ul><li>PERGERAKAN DUA BIJI GELAS </li></ul><ul><li>PERGERAKAN HANYA SEBIJI GELAS </li></ul>1 6 5 4 3 2 2 5
15. 15. PIRAMID TERBALIK <ul><li>UBAH SEMULA PIRAMID SUPAYA BERKEDUDUKAN </li></ul><ul><li>ASALNYA; DENGAN SYARAT; </li></ul><ul><li>PERGERAKAN TIGA NOMBOR </li></ul>10 2 6 5 7 3 8 1 9 4
16. 16. <ul><li>Isikan nombor 1- 9 bagi setiap </li></ul><ul><li>Petak. Pastikan jumlah mendatar </li></ul><ul><li>dan menegak adalah sama </li></ul><ul><li>Berapa jumlahnya? </li></ul>+ TANGGA JUMLAH? 1 3 5 7 6 8 4 2 9 1 9 5 4 3 7 8 2 6 2 9 5 1 4 6 7 3 8 7 2 5 8 1 9 6 4 3
17. 17. 4,5,10 ? <ul><li>ATURKAN SEMULA PASU BUNGA DALAM 5 BARIS YANG TERDIRI DARI 4 PASU DALAM SETIAP BARIS </li></ul>