📘 arithmetic

1. **Estimate and evaluate simple additions and subtractions:** - a) Estimate $20.1 + 2.1 \approx 20 + 2 = 22$.

1. Let's clarify the problem: You mentioned adding $4 + \frac{1}{2}$ and that the fifth circle is $\frac{3}{4}$ shaded. 2. First, calculate the sum $4 + \frac{1}{2}$. To add these,

1. **State the problem:** We have 4 buses carrying a total of 112 children. We want to find out how many children fit in 1 bus. 2. **Formula used:** To find the number of children

1. **Problem statement:** Add or subtract the given fractions and mixed numbers. 2. **Formula and rules:**

1. **State the problem:** Marty buys 3 pieces of yellow fabric, each 0.35 m long, and 5 pieces of green fabric, each 0.35 m long. We need to find the total length of fabric bought.

1. Let's start by understanding what you want to calculate. Usually, in math problems, you either multiply, divide, add, or subtract numbers depending on the problem. 2. To decide

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

1. The problem asks to write subtraction number sentences based on the given graphs. 2. The subtraction formula is $a - b = c$, where $a$ and $b$ are the numbers at the top connect

1. প্রশ্ন: একটি দোকানে ২৫০০ টাকার একটি পণ্য ২৫% কমে বিক্রয় করা হলে বিক্রয়মূল্য কত হবে? এবং ১০% লাভে বিক্রয় করলে বিক্রয়মূল্য কত হবে? 2. সূত্র:

1. The problem is to understand the number 5 and its properties. 2. Number 5 is a natural number, an integer, and a prime number.

1. **State the problem:** We have a tank holding 5075 litres of water. Each container holds 6 \frac{1}{4} litres. We need to find how many such containers can be filled from the ta

1. **Problem Statement:** Use the numbers 25, 8, 100, 2, 75, and 50 exactly once each with any operations to reach the target value 431. 2. **Understanding the Rules:**

1. The problem is to understand the number 1 in a mathematical context. 2. Number 1 is the multiplicative identity, meaning for any number $a$, $a \times 1 = a$.

1. The problem involves comparing times given in mixed numbers and fractions to determine which is the longest or shortest time. 2. The times given are:

1. **Ordering numbers from greatest to least:** The numbers are $2$, $-5$, $|-3|$, $1$, and $-2$. 2. Calculate the absolute value: $|-3| = 3$.

1. **State the problem:** You initially bought 10 apples, gave away 2 to the neighbor and 2 to the repairman, then bought 5 more apples and ate 1. We need to find how many apples y

1. The problem is to understand and perform basic arithmetic operations such as addition, subtraction, multiplication, and division. 2. The fundamental formulas and rules are:

1. **State the problem:** Jimmy has various bills and coins from raking leaves and a birthday check. He wants to deposit all this money into his savings account, which already has

1. **State the problem:** Jimmy earned money from raking leaves and received a birthday check. He wants to buy tennis shoes costing 93.48 using only his leaf raking money and birth

1. **State the problem:** Calculate the total amount of money Jimmy has from his bills, birthday check, and change. 2. **Calculate the total from bills:**

1. **State the problem:** John starts with 167 marbles and gives 34 marbles to Jack. We need to find out how many marbles John has left. 2. **Formula used:** To find the remaining