1.1 Number System—Addition and Subtraction, Place Value and Patterns in Addition
3.OA.8-Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.3
Letter Standing for Unknown-click here
TWO STEP PROBLEMS-click here
Solving word problems-click here
word problems-click here
THE COUNTING GAME-CLICK HERE
MATH HOOPS-CLICK HERE
Math Hoops provides word problem practice for students in grades 3 to 5. All word problems use whole numbers but the problems range from single step addition to multistep equations
GRANDSLAM MATH-CLICK HERE
Interactive game designed to help you become better at solving word problems. The questions start out easy and then get a little harder as you go
3 This standard is limited to problems posed with whole numbers and having whole-number answers; students should know how to perform operations in the conventional order when there are no parentheses to specify a particular order (Order of Operations).
3.OA.9 Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.
Find Number Patterns-click here
Pattern Chomper-click here
3.NBT.1 Use place value understanding to round whole numbers to the nearest 10 or 100.
Rounding whole numbers video- click here
sea shell rounding-click here
RULES FOR ROUNDING-click here
3.NBT.2 Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
3 digit addition split-click here
doubling to 1000-click here
difference add-click here
• How do you explain the relationship between addition and subtraction?
• How did you solve the two-step word problem? Explain your thinking.
• How can you use an equation to represent the problem and the unknown?
• How can you solve the problem? Explain your thinking.
• What patterns did you notice when using addition and subtraction? How did you find them?
• How do you use place value to round numbers?
• How can the use of estimation make logical problem-solving decisions?
• How can you check your answer?