Word Problems
Brooke picked 14 red apples and 30 green apples. How many apples did Brooke pick?
44 apples
Describe how you can find the sum of 16+35+24+14
Ones-6+5+4+4= 19
Tens place- 1+3+2+1= 70
70+19= 89
OR: Draw
OR: Regrouping
Find the sum of 62+18+19
99
How can you solve 40+83 using mental math?
123
Add 4 tens to 83. 4+8=12, so 40+83= 123
How do you write 285 in expanded form?
200 + 80 + 5
Matthew has 42 Dog Man books, 12 Captain Underpants Books, and 19 Diary of a Wimpy Kid books. How many books does Matthew have?
73 books
Describe how you would find the sum of: 24+36+13
Ones place= 4+6+3=13
Tens place= 2+3+1=60
60+13= 73
Find the sum of 12+33+56+32
133
How can you use mental math to solve 1+9+5?
15
I know 1+9=10. 10+5 is 15.
Write this number in words: 321
three hundred twenty-one
Ms. Lahti bakes 75 cookies on Monday and 30 cookies on Tuesday. How many cookies did Ms. Lahti bake?
105 cookies
Ms. Lahti bought 28 pens. Which two bags did Ms. Lahti buy? Explain how you found the numbers using words.
Bag 1- 18
Bag 2-14
Bag 3-12
Bag 4-10
Bag 1 and Bag 4
Look at tens place and ones place.
Find the sum of 41+74+43+20
178
Ms. Lahti buys 56 marbles. Which two bags of marbles did she buy?
Bag 1: 23 marbles
Bag 2: 38 marbles
Bag 3: 33 marbles
Bag 1 and Bag 3
I looked at the ones place. I know that 3+3 is six. Then I looked at the tens place. I know that 2+3 is five. Ms. Lahti bought bag one and bag three.
Continue the pattern:
415, 420, ____, ______, _____
425, 430, 435
Mrs. Evans has 27 students in her class. 13 students are girls and the rest are boys. How many students are boys?
14 boys
Explain what can happen if you line up the digits incorrectly in an addition problem.
Your sum will be incorrect. For example, if you are solving 20+8=28, if you place the 8 in the tens place, that would be 20+80=100.
Find the sum of 42+36+11
89
Without solving, which addends have a sum that is greater than 70. Explain how you knew.
a. 52+20
b. 65+10
c. 24+28
d. 19+33
a and b
I looked at the tens place.
a- 5+2=7, so the sum must be at least 70.
b- 6+1=7, so the sum must be at least 70.
c-2+2=4
d-1+3=4
What is 10 less than 218?
208
25+19+53+22= 119 coins
Explain in words how you would solve the following question:
Dominic needs 46 markers for school. Ms. Lahti gave him 13 markers. His mom gave him 20 markers. How many more markers does he need?
I added the two parts together: 13+20=33
Then, I subtracted the part from the whole: 46-33=13
I also checked it by putting 33 in my head and counting on to 46 and got 13.
Find the sum of 59+31+51+73=
214
How can you solve 28+32 using mental math?
8+2 is 10
Add a ten to the tens column.
2+3+1= 6
Answer: 60
How many tens are in 400?
40 tens = 4 hundred