Equations
Write two equations that match the letters below:
X X X
O O O O
4+3=7
3+4=7
7=4+3
7=3+4
23 is ___ groups of 10 and 3 left over.
2
Jorge has 6 apples. He needs 9 apples to make fruit salad. How many more apples does Jorge need to buy in order to have 9 in all? Write and equation to tell the story.
____ O ____ O _____
____ apples
6 +3 = 9
or
9- 6 =3
Start at 108. Count on by 1's to 113. Show your work on an open number line.
____________________________________________________________
108-109-110-111-112-113
What is the missing number?
5+6= ___
11
Which doubles fact will help you find 5+6?
a. 5+5=10
b. 4+4=8
c. 7+7=14
d. 3+3=9
a. 5+5=10
Which equation matches 1 ten and 7 ones?
a. 10+10=20
b. 10+7=17
c. 15+5=15
d. 12+5=17
b. 10+7=17
Lisa draws 7 pictures. Then she draws 9 more pictures. How many pictures does Lisa draw in all? Solve the problem and explain the strategy you used.
16
Strategy:
-Make ten ; Open number line
Which is a way to write 83?
a. eight and four
b. eighty-four
c. eighty-three
d. eighty
c. eighty-three
What addition fact can help you to find the missing part?
5 13
?
a. 5+5=10
b. 5+13=18
c. 5+8=13
d. 5+9=14
c. 5+8=13
16-6=9+2
False
Marcus counts paper clips by ones. He counts to 109. Which number will Marcus say next?
a. 108 b. 110 c. 111 d. 120
b. 110
There are some bagels in the school lunchroom. 30 of the bagels are in the box. The rest of the bagels are NOT in the box. How many bagels are there in all? Use the picture to solve. Explain how you know.
Bagels NOT in the box: O O O O O
O O O O O
O O O O O
O O
47
Draw a model to show the number 83.
llllllll . . .
Find the missing part:
13-5= ___
8
Write the missing symbol to make the equation true: 14=6+3 ___ 5
+ - =
+
Ling counts by 10s: 70,90,100,110,120
Which number does she forget to count?
a. 71 b. 75 c. 80 d. 85
c. 80
Mike, Jamal, and Cara have goldfish as pets. Mike has 6 goldfish. Cara has 8 goldfish. Cara has 5 goldfish.
Mike buys 2 more goldfish. Now how many goldfish do they have in all?
a. 20 b. 21 c. 19 d. 16
b. 21
Count by tens. Write the number in two different ways. llllll
___ tens and ____ ones is ____.
___ tens and ____ ones is ____.
6 tens and 0 ones is 60.
0 tens and 60 ones is 60.
5 tens and 10 ones is 60.
....
What number is missing?
14- ? = 2 + 7
5
Which two related addition facts can help you solve the subtraction problem:
17-9=___?
a. 9+8=17 b. 6+9=15 c. 8+9=17 d. 8+1=9 e. 8+2=10
a. 9+8=17 & c. 8+9=17
Which two are ways to show seventeen?
a. 17 b. 7 tens and 1 ones c. 17 tens d. 1 ten and 7 ones e. 8 ones
a. 17 and d. 1 ten and 7 ones
Aaron asks a friend a survey question. The chart shows the results.
Carrots- 6
Broccoli - 2
Corn- 5
How many friends took the survey? Write an equation to show your work.
_____ friends
6+2+5=13
Use the open number line. Show how to count 6+8.
_________________________________________
6+8= ____
14
What number is missing?
16- 10 = ___ + 5
1