Base 10
38 - 9 =
29
Solve using an open number line:
26 - 11 =
15
29 - 17 =
12
What is difference?
The answer to a subtraction problem.
Jayce has 40 stickers. He gives 10 stickers to Kezra. How many stickers does Jayce have left?
30 stickers
74 - 8 =
66
Solve using an open number line:
45 - 13 =
32
45 - 14 =
31
when you estimate what do you do to the addends?
Round to the nearest ten.
Erin has 17 more books than Isabella.
Erin has 44 books. How many books does Isabella have?
27 books
43 - 16 =
27
Solve using an open number line:
72 - 15 =
57
50 - 25 =
25
Is 1,537 even or odd?
odd
Aiden has some gum. Briella gave him 16 more pieces of gum and 4 chocolate bars. Now Aiden has 54 pieces of gum. How many pieces of gum did Aiden have to start with?
Aiden had 38 pieces of gum to start with.
56 - 39 =
17
Solve using an open number line:
62 - 36 =
26
64 - 28 =
36
What is 14 + 16 - 12 + 20?
38
Ryker found 32 leaves on the ground at recess. He gave 11 of the leaves to Betty. Then, he found 17 more leaves on the ground. How many leaves does Ryker have now?
38 leaves
95 - 37 =
58
Solve using an open number line:
83 - 59 =
24
93 - 57 =
36
What is 154-27?
127
The apartment building has 80 windows. Bob cleans 35 windows on Monday. He cleans 17 windows on Tuesday. How many windows does Bob have left to clean?
28 windows