Expanded Form and Number Names

2.NBT.1

“Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; e.g., 706 equals 7 hundreds, O tens, and 6 ones. Understand the following as special cases: a. 100 can be thought of as a bundle of ten tens ― called a "hundred." b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and O tens and O ones).”

Questions 1 and 2 read hundreds flats, tens rods and ones cubes, including the 0-tens number 307.

2.NBT.2

“Count within 1000; skip-count by 5s, 10s, and 100s.”

Questions 11 to 13, the three skip-counting trails.

2.NBT.3

“Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.”

Questions 3 and 4 move between standard form, expanded form and number names.

2.NBT.4

“Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.”

Questions 5 to 10, six symbol comparisons up to 900 versus 899.