Let’s go over addition!
How Many Animalsin the Zoo?
How Many Pokey Pigs?
1 + 1
In English + is called the “plus sign”. When we read an addition problem, we just say plus!
= 2 Pokey PigsIn English = is called the “equals sign”. When we read a math problem, we just say “equals”, or “is equal to”, or sometimes just “is” !
How Many Zany Zebras?
2 + 3
5 Zany Zebras
How Many Easter Bunnies?
3 + 5
8 Easter Bunnies
How Many Pretty Pandas?
1 + 3
The answer to an addition problem is called the “sum”. “Find the sum of…” means do the addition problem!
4 Pretty Pandas
How Many Feathered Flamingos?
5 + 4
9 Feathered Flamingos
How Many HoppingHound Dogs?
7 + 3
10 HoppingHound Dogs
How Many Roaring Lions?
6 + 1
7 Roaring Lions
How Many Toddling Turtles?
2 + 4
6 Toddling Turtles
How Many Sleeping Seahorses?
1 + 2
3 Sleeping Seahorses
How Many Croaking Frogs?
0 + 1
1 Croaking Frog
Adding without carry overLet’s work on some addition that is a little harder!
Tens OnesAdd 44 and 32Tens Ones 4 4+ 3 2________________ 7 6
Add the ones: 4 ones + 2 ones = 6 ones
Add the tens: 4 tens + 3 tens = 7 tens
So, 44+32=76
Hundreds Tens OnesAdd 116 and 23Hundreds Tens Ones 1 1 6+ 2 3__________________ 1 3 9
Add the ones: 6 ones + 3 ones = 9 ones
Add the tens: 1 tens + 2 tens = 3 tens So, 116+23
=139Add the hundreds: 1hundred+ 0 hundred = 1 hundred
Hundreds Tens OnesAdd 161 and 214Hundreds Tens Ones 1 6 1 + 2 1 4 __________________ 3 7 5
Add the ones: 1 one + 4 ones = 5 ones
Add the tens: 6 tens + 1 ten = 7 tens So, 161+214
=375Add the hundreds: 1 hundred+ 2 hundreds = 3 hundreds
Now you try! Complete page 18 in your textbook.