2.NBT.6 Add up to four two-digit numbers using strategies based on place value and properties of operations.
ADD up to four 2-DIGIT NUMBERS
1)Desiree loves to read. She has 12 books about animals.
She also has 14 mystery books and 15 books about different countries.
How many books does she have in all?
31 39 41 42 / 2)
Desiree also likes to shop. She went shopping with her mother for a party.
They bought 24 paper plates, 18 paper cups and 12 cans of juice.
How many items did they buy in all?
44 48 53 54
3)
30 + 45 + 20 =
77 95 105 140 / 4)
20 + 14 + 20 + 14 =
56 58 68 70
5)
Eliza says it is easy to add these four numbers. 20 + 12 + 30 + 7
· Why are they easy to add?
· What is the sum of these numbers? ______
6)
Eliza’s brother Johnnie says some numbers are easy to add and some are not. He says it is easy to add 13 + 41 + 11 + 43
· Why are these easy to add?
· What is their sum? ______
7)
Johnnie says it is harder to add 56 + 66 + 33 + 23
· Why are these harder to add?
· What is their sum? ______
8)
Johnnie’s teacher has 16 yellow balloons, 24 red balloons, and 18 blue ones.
How many balloons in all?
Johnnie’s teacher has ______balloons in all. / 9)
His school has 64 big windows and 38 small windows.
How many windows does the school have?
The school has ______windows in all.
10)
In the spring Eliza went to the zoo with Johnnie. The zoo had many different animals. It had 12 deer and 26 monkeys. It also had 38 birds.
How many animals and birds is this in all?
There were ______animals and birds in all.
11)
100 + 20 + 500 + 60 =
Answer: ______/ 12)
92 + 8 + 64 + 36 =
Answer: ______
13)
30 + 22 + 30 + 44 =
Answer: ______/ 14)
25 + 25 + 50 + 75 =
Answer: ______
Page 1 of 1 revised 3/15/14 use at FEA workshop Dec. 2015 permitted as/author: J. Brendel