📊 Addition and Subtraction within 10,000 Question 1 of 20 Score: 0 / 100 Loading question... Submit Answer Next Question 🎉 FINISH! 🎉 Your Score: 0 / 100 🔄 Start New Quiz additional question Addition and Subtraction within 10,000 Addition and Subtraction within 10,000 In these notes, we will explore how to add and subtract numbers up to 10,000. This includes simple operations without regrouping, operations requiring regrouping, mental strategies, and solving word problems using these skills. 1. Simple Addition within 10,000 Simple addition involves adding numbers where the sum of digits in each place value (ones, tens, hundreds, thousands) is less than 10, so no regr...

Rounding Estimation Question 1 Submit Score: 0 Reset Estimation: Your Math Superpower What Is Estimation? Estimation is finding a value close enough to the exact answer—essentially a smart guess. Key Methods Covered Rounding Numbers Front-End Estimation Real-life applications Rounding Rules Nearest Ten Look at the ones digit : 0-4 → Round DOWN 5-9 → Round UP Replace the ones digit with 0 . Example: 42 → 40 . Nearest Hundred Look at the tens digit : 0-4 → Round DOWN 5-9 → Round UP Change tens and ones to 0 . Example: 2596 → 2600 . Nearest Thousand Look at the hundreds digit : 0-4 → Round DOWN 5-9 → Round UP Change hundreds, tens, and ones to 0 . Example: 7503 → 8000 . Quick Reference Chart Number Nearest Ten Nearest Hundred Nearest Thousand ...