📘 arithmetic

1. **State the problem:** We need to round the prices $1199$, $799$, and $499$ to the nearest hundred and then estimate their total cost. 2. **Recall the rounding rule:** To round

1. **State the problem:** We need to estimate the sum of $6281$, $3141$, and $4065$ by rounding each number to the nearest hundred. 2. **Rounding rule:** To round to the nearest hu

1. **State the problem:** We want to estimate the sum of $339 + 598$ by rounding each number to the nearest ten, then calculate the exact sum and compare the estimate to the actual

1. **State the problem:** We need to round the number $$36,172,865$$ to various place values: hundred, thousand, ten thousand, hundred thousand, million, and ten million. 2. **Roun

1. **State the problem:** Maria starts with $39$ apples. She gives $20$ apples to Besty and $10$ apples to Viggie. We need to find how many apples Maria has left. 2. **Formula used

1. The problem asks for the sum of two very large numbers: 6373738838383847474746 and 883838366363366363637373. 2. To find the sum, we use the addition operation, which combines th

1. The problem is to find the sum of 9 and 10. 2. The formula for addition is $a + b = c$, where $a$ and $b$ are numbers and $c$ is their sum.

1. **State the problem:** Calculate the value of the expression $$3 \div \frac{1}{3} \times 3$$. 2. **Recall the order of operations:** Division and multiplication have the same pr

1. The problem is to multiply 521 by 300. 2. The formula for multiplication is simply $a \times b$, where $a=521$ and $b=300$.

1. The problem is to calculate the product of $3$ and $5$. 2. The formula for multiplication is:

1. **State the problem:** Calculate the sum of 10 and 57. 2. **Formula used:** Addition of two numbers is given by $a + b$.

1. **State the problem:** Matthew initially has 75¢ in his piggy bank. He adds 6 quarters and 1 dime. We need to find the total amount of money in dollars and cents now. 2. **Recal

1. **State the problem:** Annabelle pays with a $50 bill and receives change consisting of two $20 bills, one $5 bill, and three quarters. 2. **Calculate the total change received:

1. Problem: Add the numbers $17 + 24$. 2. Use the addition formula: $a + b = c$ where $a$ and $b$ are numbers to add.

1. **State the problem:** Calculate the sum of 1 and 1. 2. **Formula used:** Addition of two numbers is given by $a + b$.

1. The problem asks: What time will it be 30 * 4 minutes from now? 2. First, calculate the total minutes by multiplying 30 by 4.

1. The problem states: If one wadda has 50 apples and there are 3 waddas, how many apples are there in total? 2. To find the total number of apples, we use the multiplication formu

1. **State the problem:** Calculate the sum of 1 and 1. 2. **Formula used:** Addition of two numbers is given by $a + b$.

1. The problem is to find the sum of 2 and 2. 2. The formula for addition is $a + b = c$, where $a$ and $b$ are numbers and $c$ is their sum.

1. **State the problem:** Calculate the sum of seven 7's added together. 2. **Formula used:** When adding the same number multiple times, use multiplication: $$\text{Sum} = n \time

1. The problem is to calculate the product of 7 and 7. 2. The formula for multiplication is $a \times b = c$, where $a$ and $b$ are numbers and $c$ is their product.