Christmas Edition First Grade Math 1 NBT.2 - Understand Place Value Practice provides two ways for students to practice and show mastery of their ability to understand subtraction as an unknown-addend problem.
Problems are unique from other sets I offer!
It includes 20 distinct problems in two sets (67 slides in all!), with and without following answer slides and now Student Answer Sheet and matching Answer Key. The PowerPoint file can be used on computers, or Promethean and Smart boards.
Take a look at the preview file and buy today for your students benefit!
Standard 1.NBT.2 Understand place value.
2. Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases:
a. 10 can be thought of as a bundle of ten ones — called a “ten.”
b. The numbers from 11 to 19 are composed of a ten and one, two,
three, four, five, six, seven, eight, or nine ones.
c. The numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two,
three, four, five, six, seven, eight, or nine tens (and 0 ones).