fun with mathematics! comparisons, adding and subtracting, and symmetry
DESCRIPTION
Fun with Mathematics! Comparisons, Adding and Subtracting, and Symmetry. Ms. Angie 2 nd Grade Math. Learning Objectives!. You will be able to: Compare whole numbers up to 999 Add and Subtract number combinations up to 20 Identify symmetry. Based on South Carolina Standards: - PowerPoint PPT PresentationTRANSCRIPT
Fun with Mathematics!
Comparisons, Adding and Subtracting, and
Symmetry
Ms. Angie
2nd Grade Math
Learning Objectives! You will be able to:
Compare whole numbers up to 999
Add and Subtract number combinations up to 20
Identify symmetry
Based on South Carolina Standards:
2-2.4 2-2.8 2-4.2
Comparisons
What is a comparison? Compare two numbers to find out which is bigger, smaller, or the
same
21 is smaller than 37
393 is bigger than 112
863 is the same as 863
Adding and Subtracting
Add numbers together
7 + 8 = ________
10 + 1 = ________
11 + 9 = ________
Subtracting Numbers
20 – 7 = ________
8 – 2 = ________
16 – 7 = ________
When you ADD numbers you combine them
When you SUBTRACT numbers you take them away
15
11
20
13
6
9
