[Math] Study guide for upcoming quiz

Grade 3 Addition and Subtraction Study Guide

Date: Thursday, November 22nd 2018

- Rounding 2- and 3-digit numbers (i.e. Rounding 139 to the nearest ten is 140)

- Comparing Numbers (e.g., I know 83 is greater than 73 because 83 has 8 tens and
73 has 7 tens)

-Estimating sums and differences (23+52= ___  → 23 is rounded to 20 and 52 is rounded to
50, 20+50= 70)

- Adding and subtracting involving 3-digit numbers (i.e. 123+546, 177-58, etc.)
using a variety of strategies (including standard addition/subtraction)

- Using different strategies for solving a problem

- Find a missing number (i.e. 12- __=3)

- Problem-solving (Underline important parts of the question, show all of your
thinking clearly and include an answer sentence)

*Students can pick and choose any addition and subtraction strategies.

[Math] Addition and Subtraction

In math, we have been exploring different ways to add or subtract two and three digit numbers.

We learned to play "i spy" game. You can play it at home with your child- i spy the two number that adds up to 10 or two number that rounds to 30.