Unit 6

Place Value, Comparison, Addition, and Subtraction to 100

Math

Description:  The students will focus on “adding and subtracting within 100. The new level of complexity is to build off the place value understanding and mental math strategies that were introduced earlier. Students explore by using simple examples and the familiar units of 10 made out of linking cubes, bundles, and drawings. Students also count to 120 and represent any number within that range with a numeral.

Louisiana Student Standards for Mathematics (LSSM)

Instructional Outcomes

Enduring Understandings:

·         Students will solve different types of addition and subtraction word problems and equations using different strategies.

·         Place value can be used to compare two numbers.

·         Students will add two-digit and one-digit numbers with and without composing a group of ten.

·         Students will represent numbers greater than 10 as the sum of all the tens and the ones.

·         Numbers greater than 10 can be named in more than one way.

Essential Questions:

·         What happens when we join two quantities or take one from another?

·         How can we find the total when we join two quantities?

·         How can we find what is left when we take one quantity from another?

·         How can we find the difference when we compare one quantity to another?

·         How can we compare one quantity to another?

·         How can I solve different types of addition and subtraction word problems using different strategies?

·         How do I explain my answer so that others understand my thinking?