Water Consumption and Subtraction Concepts

Mrs. Walker introduces subtraction using the standard algorithm, focusing on decomposing numbers. The lesson includes solving application problems involving Tara's water bottles and Jack's grapes, demonstrating subtraction with decomposition and using a tape diagram. Students are encouraged to practice independently and reach out with questions.

What is the main learning goal of today's lesson?

• To learn how to add using the standard algorithm

• To understand how to decompose numbers for subtraction

• To memorize multiplication tables

• To practice division using long division

What does decomposing a number mean?

• Dividing numbers into equal parts

• Multiplying numbers together

• Breaking a larger unit into smaller units

• Combining smaller units into a larger unit

How many milliliters of water does Tara bring in total?

• 825 milliliters

• 354 milliliters

• 471 milliliters

• 132 milliliters

What is the first step in solving the subtraction problem for Tara's water?

• Start with the tens place

• Start with the thousands place

• Start with the hundreds place

• Start with the ones place

How many milliliters of water did Tara drink during her hike?

• 132 milliliters

• 693 milliliters

• 825 milliliters

• 471 milliliters

How many grams of grapes did Jack buy on Tuesday?

• 162 grams

• 345 grams

• 700 grams

• 507 grams

What is the difference in grams of grapes Jack bought on Tuesday compared to Thursday?

• 507 grams

• 700 grams

• 345 grams

• 162 grams

What is the result of the subtraction problem 513 - 241?

• 345

• 693

• 272

• 162