Vocabulary
What do we call the answer to an addition problem?
sum
Jacob will get back 13 cents.
87 + 11 = ___
98
56 - 34 = ___
22
How many tens are in 152?
50
Are these key words for addition or subtraction?
altogether
in all
Addition
Ms. Martin creates 33 math problems. Ms. Christian creates 17 math problems. How many math problems do they create in all?
They created 50 math problems.
33 + 23 = ___
56
84 - 23 = ___
61
What is the expanded form of 112?
100 + 10 + 2
Is it a key word for addition or subtraction?
fewer
subtraction
Sam earned 42 cents last week. This week he earned 2 dimes and 13 pennies. How much money does Sam have in all?
Sam has 75 cents.
43 + 37 = ___
80
28 - 19 = ___
Complete the pattern:
125, 135, 145, ____, ____, ____
155, 165, 175
Are these key words for addition or subtraction?
how many more
how many fewer
difference
subtraction
Ms. Christian has 34 plants in her house. Stella puts 16 of the plants outside. How many plants are still in the house?
18 plants are still in the house.
98 + 26 = ___
124
174 - 36 = ___
138
If you measure an object with a ruler, which is greater, the number of centimeters or the number of inches? Explain why!
The number of centimeters will be greater.
Centimeters have a shorter length unit than inches so more centimeters are needed to measure than inches.
What is the answer to a subtraction problem called?
the difference
Harry and Niall have 58 toys altogether. Liam has 29 toys. How many more toys do Harry and Niall have?
29 toys
376 + 25 = ___
401
267 - 28 = ___
239
There are 3 rows of pencils. There are 4 pencils in each row. How many pencils are there altogether?
Write 2 repeated addition sentence.
4 + 4 + 4 = 12
3 + 3 + 3 + 3 = 12