CCGPS3.NBT.2 con’t Using Place Using the standard Using the Value algorithm relationship between addition 100+200 = 300 1 1 178 and subtraction 70+20 = 90 + 225 8+5 = 13 Add 2 to 178 to equal 180. 403 300+90+13=403 Add 180+220 to get 400. Add the 3 left over to get 403.
CCGPS3.NBT.2 con’t Using Place Value 100+200 = 300 70+20 = 90 8+5 = 13 300+90+13=403 Using the standard algorithm 1 1 178 + 225 403 Using the relationship between addition and subtraction Add 2 to 178 to equal 180. Add 180+220 to get 400. Add the 3 left over to get 403.
3rd_grade_math_kid_friendly_standards.docx