📘 arithmetic

1. The problem is to multiply 56 by 90. 2. Write the multiplication as $56 \times 90$.

1. The problem is to multiply 75 by 67. 2. Write the multiplication as $75 \times 67$.

1. The problem is to evaluate the expression $689 + 789$. 2. Add the two numbers directly: $$689 + 789 = 1478$$

1. The problem is to find the sum of 23 and 57. 2. We add the two numbers: $$23 + 57$$

1. The problem is to multiply 34 by 34. 2. We write the multiplication as $34 \times 34$.

1. The problem is to find the sum of 12 and 52. 2. Add the two numbers: $$12 + 52 = 64$$

1. The problem is to find the sum of 80 and 80. 2. We add the two numbers: $$80 + 80$$.

1. The problem is to find the sum of 6 and 10. 2. Add the two numbers: $6 + 10 = 16$.

1. The problem is to find the sum of 78 and 78. 2. We add the two numbers: $$78 + 78$$.

1. The problem is to multiply 90 by 90. 2. Multiplication means adding a number to itself a certain number of times. Here, we add 90 to itself 90 times.

1. **State the problem:** We need to find the sum of 76 and 67. 2. **Add the numbers:**

1. The problem is to find the sum of 23 and 4. 2. We add the two numbers: $$23 + 4 = 27$$

1. The problem is to find the value of $24 - 24$. 2. Subtraction means taking away the second number from the first number.

1. The problem is to understand the number 123 as a mathematical object or value. 2. The number 123 is a positive integer.

1. The problem is to multiply 79 by 79. 2. We can write this as $79 \times 79$.

1. The problem is to find the value of 26. 2. Since 26 is a constant number, it is already simplified and does not require any further calculation.

1. **State the problem:** Simplify the expression $3 \frac{1}{4} - \left(5 \frac{1}{2} + 2 \frac{2}{3}\right)$.\n\n2. **Convert mixed numbers to improper fractions:**\n$3 \frac{1}{

1. The problem is to evaluate the expression $3 \frac{1}{4} - \left(5 \frac{1}{5} + 2 \frac{2}{3}\right)$.\n\n2. Convert the mixed numbers to improper fractions:\n$3 \frac{1}{4} =

1. **State the problem:** We need to determine which people are tall enough to ride the roller coaster. The minimum height required is $1 \frac{2}{3}$ meters. 2. **Convert mixed nu

1. The problem asks: In the multiplication table of 2, at which position does the number 32 appear? 2. The multiplication table of 2 is formed by multiplying 2 by natural numbers:

1. The problem asks to square the number 267. 2. Squaring a number means multiplying the number by itself: $$267^2 = 267 \times 267$$.