or 4 tens 17 ones If a student makes this representation, ask the student a way to trade some of the “Is there ones so that you are using fewer base ten blocks?” Possible Answer: I could trade 10 ones for a ten. I would have 5 tens and 7 ones. Read , Write, and Describe Whole Numbers 0-1,200 Example: Write the number 39 on the board. Ask the can you read this students, “How number?” Possible Verbal Answers: number is “The 39.” is three tens and or tens and “It nine ones.” “3 9 ones.” Possible Written number is 39 Answer: “The or thirty-nine.” Example: Ask the can you write 6 tens students, “How and 7 ones?” Answer: 67 Example: Ask the can the number 74 be students, “How described?” Answer: 7 tens and 4 ones or 70 + 4
or 4 tens 17 ones If a student makes this representation, ask the student “Is there a way to trade some of the ones so that you are using fewer base ten blocks?” Possible Answer: I could trade 10 ones for a ten. I would have 5 tens and 7 ones. Read , Write, and Describe Whole Numbers 0-1,200 Example: Write the number 39 on the board. Ask the students, “How can you read this number?” Possible Verbal Answers: “The number is 39.” “It is three tens and nine ones.” or “3 tens and 9 ones.” Possible Written Answer: “The number is 39 or thirty-nine.” Example: Ask the students, “How can you write 6 tens and 7 ones?” Answer: 67 Example: Ask the students, “How can the number 74 be described?” Answer: 7 tens and 4 ones or 70 + 4