Mathematics
Grade 2
15 min
Add four or more numbers up to two digits each: word problems
Add four or more numbers up to two digits each: word problems
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1
Introduction & Learning Objectives
Learning Objectives
Identify four or more two-digit numbers in a word problem.
Correctly line up numbers in columns for addition.
Add a column of four or more single digits.
Regroup (carry over) from the ones place to the tens place.
Find the total sum of four or more two-digit numbers.
Write the final answer with the correct label (e.g., 'apples', 'stickers').
Let's plan a party! π How many total balloons do we need if we get lots of different colors? π
We will learn to solve story problems with many numbers. This helps us add big groups of things together. It is a very useful math superpower! πͺ
Real-World Applications
Counting total toys in a big collection π§Έ
Adding up scores in a game with friends π²
Finding the total number of snacks...
2
Key Concepts & Vocabulary
TermDefinitionExample
Word ProblemA math problem that tells a story. π"There are 10 red fish, 12 blue fish, and 15 yellow fish. How many fish in all?"
AddTo put numbers together to find the total. β10 + 12 + 15 is adding three numbers.
SumThe answer you get when you add numbers. The total! β
In 5 + 4 = 9, the sum is 9.
Ones PlaceThe number all the way on the right. πIn the number 47, the 7 is in the ones place.
Tens PlaceThe number to the left of the ones place. πIn the number 47, the 4 is in the tens place.
RegroupingMaking a group of 10 ones into 1 ten. It's like trading! β‘οΈIf you have 14 ones, you can regroup to make 1 ten and 4 ones.
3
Core Formulas
Line Up Your Numbers
\begin{array}{r}
11 \\
23 \\
14 \\
+ 30 \\
\hline
\end{array}
Stack numbers so the ones are over ones and tens are over tens. This keeps your addition neat!
Add the Ones First
\begin{array}{r}
1\phantom{0} \\
11 \\
23 \\
14 \\
+ 30 \\
\hline
\phantom{1}8 \\
\end{array}
Always start adding with the column on the right. Add all the ones together.
Regroup and Add the Tens
\begin{array}{r}
^1\phantom{0} \\
11 \\
23 \\
14 \\
+ 30 \\
\hline
78 \\
\end{array}
If the ones make a new ten, carry it over. Then, add all the numbers in the tens column.
4 more steps in this tutorial
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Challenging
A bakery sold 24 chocolate cupcakes and 26 vanilla cupcakes on Monday. On Tuesday, they sold 35 strawberry cupcakes and 18 lemon cupcakes. How many cupcakes did they sell in total on Monday and Tuesday?
A.103
B.93
C.50
D.53
Challenging
A pet store is counting its fish. The table shows how many of each kind they have. How many fish are there in total? | Fish Type | Number | |---|---| | Guppies | 32 | | Goldfish | 45 | | Angelfish | 18 | | Tetras | 29 |
A.114
B.125
C.124
D.104
Challenging
The park snack bar sold 25 pretzels, 30 hot dogs, 42 drinks, and 18 bags of popcorn. There were 95 people in the park that day. How many food and drink items were sold in total?
A.210
B.115
C.95
D.125
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