Add and subtract numbers, including decimal numbers, using standard algorithms.
Gr 3 - Adding w/ No Regrouping
Cross off the blocks that you are supposed to subtract and count what is leftover
Gr 3 Subtract w/o regrouping
There may be more than one answer!
Gr 3 Add 2 digit w/ regroup
Gr 3 Add 3 digit w/ regroup
Gr 3 Subtract 2 digit -regroup
Gr 3 3 digit subtraction
Mastering Math Manipulatives 4-8
Adding Decimal Fractions (Activity 1.4 - p. 40)
Manipulatives Needed - Base-Ten Blocks
Mastering Math Manipulatives 4-8
Subtracting Decimal Fractions (Activity 1.5 - p. 42)
Manipulatives Needed - Base-Ten Blocks
Gr. 5 Add & Subtract Decimals