Use this lesson to review three-digit addition strategies including base-ten drawings, number lines, and the standard algorithm.

It's rounding time. Help young mathematicians learn to round to the nearest ten and hundred with this teacher-approved lesson.

Students will get to explore three-digit numbers through base-ten blocks and written form. Students will get plenty of practice identifying the place values of a number both individually and with the class.

Give your students a head start in rounding with this fun lesson that gives them an easy trick to help them learn if they should round up or down to the nearest 10.