Place Values and Properties of Operations
Description: Online Worksheet for CCSS.Math.Content.2.NBT.B.9 Explain why addition and subtraction strategies work, using place value and the properties of operations.1
Tags: CCSS.Math.Content.2.NBT.B.9 2nd Grade, 2nd grade math, Addition, Subtraction





Why does setting 5 carrots in one row and 3 carrots in the second row give us 8 carrots in total?
How can we use place value to subtract 7 flowers from a bundle of 12 flowers?
If you sow 10 seeds in each garden bed and have 4 beds, how many seeds will you sow in total?
If you had 10 birds and 5 flew away, why are there only 5 birds left?
After putting 4 eggs in a basket, someone added 3 more. Why does the basket now have 7 eggs?
Why does having two garden tools in a wheelbarrow and adding three more give you five garden tools in total?
If there were 10 bees in a birdhouse and 5 flew away, why are there only 5 bees left?
How do we use place value to add 21 ladybugs to a group of 18 ladybugs?
If you count 2 flowers in one part of the garden and 8 in another, how many flowers do you have in total?
Why does having three rainbows in the sky, and seeing two more, result in seeing five rainbows in total?