Are you ready to rock? That is, collect rocks... Join us as we practice adding to our mighty rock collection. Adding bigger numbers can be tricky, but using base ten blocks helps us count every rock with ease. Base ten blocks are an excellent tool to help students understand place value and add double digit numbers accurately. Rock on!

Key takeaways

Learn to identify and use base ten blocks, including ones and tens

Understand basic place value as tens place and ones place, and represent place value with base ten blocks

Practice adding double digit numbers using a place value chart

Standards addressed

CCSS.MATH.CONTENT.1.NBT.C.4

Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.