Choose the numbers 5, 6, 7 and 8 to form the multiplication formula of two digit by two digit to maximize the product Select the numbers 5, 6, 7 and 8 to form the multiplication formula of two digit by two digit, 1. Product maximum () * () = () 2, product minimum: () 8 () = ()
Maximum product (86) * (75) = (6450)
Minimum product: (57) * (68) = (3876)
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- 1. Use the numbers 0, 2, 5 and 7 to form the formula of multiplying two digits by two digits: 1. How many can you write? 2. What is the largest and smallest product?
- 2. 2. 3, 4 and 5 constitute the formula of multiplying two digits by two digits, and the product is the largest What are the rules?
- 3. With 4, 5, 6 and 7, which two digit multiplication formula can these four numbers form? What are the minimum product and the maximum product?
- 4. In the following, fill in 1, 2, 3, 4, 5, 6, 7, 8 and 9 (the number in each formula cannot be repeated, and the numerator of fraction part is less than denominator), so that the value of formula a with fraction is the largest and that of formula B is the smallest
- 5. In the following, fill in 1, 2, 3, 4, 5, 6, 7, 8 and 9 (the number in each formula cannot be repeated, and the numerator of fraction part is less than denominator), so that the value of formula a with fraction is the largest and that of formula B is the smallest
- 6. Put the seven numbers 0, 1, 2, 3, 4, 5 and 6 in the square of the circle. Each number appears just once to form an integer with only one or two digits. What is the number in the square? ○×○=□=○÷○
- 7. Put the seven numbers 0, 1, 2, 3, 4, 5 and 6 in the square of the circle. Each number appears just once to form an integer with only one or two digits. What is the number in the square? ○×○=□=○÷○
- 8. Put the seven numbers 0, 1, 2, 3, 4, 5 and 6 in the square of the circle. Each number appears just once to form an integer with only one or two digits. What is the number in the square? ○×○=□=○÷○
- 9. Put the seven numbers 0, 1, 2, 3, 4, 5 and 6 in the square of the circle. Each number appears just once to form an integer with only one or two digits. What is the number in the square? ○×○=□=○÷○
- 10. Put the seven numbers 0, 1, 2, 3, 4, 5 and 6 in the square of the circle. Each number appears just once to form an integer with only one or two digits. What is the number in the square? ○×○=□=○÷○
- 11. Use the four numbers 1.2.3.4 to form a multiplication of two digits by two digits To be the biggest, I'm a primary school student. It's better to list all, with vertical
- 12. A multiplication formula of two digits multiplied by two digits, one of which is 29. If you add two multipliers and the product, you get 839. What's the other multiplier?
- 13. Use 2,0,5,6 to form a multiplication formula of two digits multiplied by two digits. Can you write the formula of maximum and minimum product
- 14. Use 5, 6, 7 and 8 to form the multiplication formula of multiplying two digits by two digits. The formula that maximizes the product is? The formula that minimizes the product is?
- 15. Use 4, 5, 6 and 7 to form the multiplication formula of multiplying two digits by two digits (the number can't be used repeatedly). Please write the formula of maximum and minimum product?
- 16. Use 0.1.2.3.4.5.6.7.8.9. These ten numbers to form an addition vertical? (ten numbers cannot be repeated)
- 17. Use eight numbers in 1.2.3.4.5.6.7.8 to form a division formula. The number can't repeat a four digit division by a three digit division
- 18. Use 0, 1, 2, 3 and 4 to form several three digit numbers without repetition? (to make an equation)
- 19. The math problem has a subtraction formula, the subtracted plus the subtracted, plus their difference, the sum is 512, the subtraction is 125, how to get the formula
- 20. In a subtraction formula, the sum of the subtracted, the subtracted and the difference is 100. When the subtracted is 38, the subtracted is (), and the difference is ()