In Chapter 1 students will:
Model the 10-1 relationship among place-value positions in the base-ten number system
Read and write whole numbers in the standard, word, and expanded form
Compare and order whole numbers
Round a whole number to any place
Add & subtract whole numbers; use estimation to determine if solutions are reasonable
Vocabulary
place value – the value of a digit in a number, based on the location of the digit
digit – any single number; 0-9
standard form – a way to write numbers by using the digits 0-9 with each digit having a place value
word form – a way to write numbers by using words
expanded form – a way to write numbers by showing the value of each digit
period – each group of three digits separated by commas in a multi-digit number
addend – any number used to add
sum – the answer to an addition problem
difference – the answer to a subtraction problem
compare – to describe whether numbers are equal to, less than, or greater than each other
order – a particular arrangement or placement of things one after the other
estimate – a number close to an exact amount
round – to replace a number with another number that tells about how many or how much
Chapter 1 videos:
Lesson 1.1 Model Place Value Relationships
Lesson 1.2 Read and Write Numbers
Lesson 1.3 Compare and Order Numbers
Lesson 1.4 Rounding Numbers
Lesson 1.5 Investigate - Rename Numbers
Lesson 1.6 Adding Whole Numbers