Equations
N+7=20-4 and Check
N+7=20-4 9+7=20-4
N+7=16 16=16
N= 16-7
N=9
7,924 x 6
47,544
Mom pours 7 glasses of juice on Monday, and 22 glasses of juice on Tuesday. How many glasses of juice are there ALL TOGETHER?
7+22=29 juices
$37.04 x 6
$222.24
Round 41 to the nearest 10 and solve.
41 x 5=
41 x 5=205, 40 x 5=200
x-9=10+15 and check
x-9=25 34-9=10+15
x=25+9 25=25
x=34
5391 x 4
21,564
Jim has a puppy. His puppy eats dog bones. The puppy eats 1 bone a day. How many bones will the puppy eat a week? How many bones will the puppy eat in two weeks?
1x7=7 bones a week
2x7=14 bones in two weeks
$23.92 x 5
$119.60
12+ ___= 18
6
N+4=9x4 and check
N+4=9x4 32+4=9x4
N+4=36 36=36
N=36-4
N=32
6013 x 5
30,065
There were 5 penguins walking across the ice. There were 6 penguins sliding into the water. How many penguins were there in all?
5+6=11 penguins in all
$76.29 x 4
$305.16
Fill in the blank with >,<, or =.
18_____9 x 2
=
N+7=25+2 and check
N+7=25+2 20+7=25+2
N+7=27 27=27
N=27-7
N=20
3245 x 5
16,225
A penguin swam after a school fish. There were 12 fish in the school. The penguin ate 7 of the fish. How many fish were left?
12-7=5 fish were left
3 quarters + 5 nickels + 18 pennies
.75
.25
+ .18
= $1.18
What is the opposite of division?
Multiplication
D-2=8+6 and check
D-2=8+6 16-2=8+6
D-2=14 14=14
D=14+2
D=16
2,097 x 5
6,291
Morgan got a slate and chalk for school. A slate cost 5 cents. Chalk cost 2 cents. He paid with two nickels. How much change did he get back?
5+2=7 cents
two nickels = 10 cents
10-7=3
Morgan gets 3 cents back.
4 quarters + 7 nickels + 3 pennies
1.00
.35
+ .03
= $1.38
Which number is correct? Two hundred fifty-five thousand, seven hundred seven.
A) 205,577
B) 200,577
C) 255,707
C) 255,707