Vocabulary Review
A ____________ is a line with number labels.
number line
How can you decompose the second addend to make a 10? Complete the equations.
8 + 7 = 8 + ____ + 5
8 + 7 = 10 + ____
8 + 7 = ____
2
5
15
You can _________ by starting at a number and counting up to another number.
count on
Is the equation true or false? Circle the correct answer.
75 = 57 + 19
B. False
57 + 19 = 76
You can __________________ addends by taking an amount from one addend and adding it to another addend.
adjust
8A. Darius sees 28 ducks and 47 geese. How can you adjust the numbers to find how many total birds he sees? Choose all the correct answers.
B. 25 + 50
D. 30 + 45
friendly numbers
8B. How many birds in all? Complete the sentence.
Darius sees _________ birds in all.
75
What number makes the equation true? Circle the correct answer.
56 + 18 =? + 33
C. 41
56 + 18 = 74
? + 33 = 74
When you decompose numbers by place value and add their parts, you use _____________________.
Which correctly shows decomposing both addends to find 48 + 37? Circle the correct answer.
D. 40 + 8 + 30 + 7
How can you decompose one addend to add 63 + 19?
Complete the equations.
Add tens. Add ones.
63 + ____ = ______ ____ + 9 = _____
63 + 10 = 73
73 + 9 = 82