Vocabulary
How many tens are in the number 71
There are 7 tens in the number 71
10+5
Ms. Looney had 12 cupcakes on her desk. 12 students each took one cupcake. How many cupcakes are left on Ms. Looney's desk?
0
20+30
50
100-90
10
How many tens and ones are in the number 64
6 tens and 4 ones
10+1
11
Mrs. Mastrian brought 15 donuts to school for the teachers. The 2nd grade teachers ate 5 donuts. How many donuts does Mrs. Mastrian have now?
10 donuts
50+10
60
70-30
40
What is the answer to an addition problem called?
the sum
12+8
20
27 friends came to class on Monday. 21 friends came to school on Tuesday. How many more friends came to school on Monday than Tuesday?
6 friends
18+4
22
30-8
22
When you get 'more' of something, you are __________.
adding
15+3
18
15-8
7
66+30
96
48-6
42
When you 'give' or 'take away' you are ___________.
subtracting
11+9
20
20-3
17
8+65
73
85-60
25