4th Grade Multiply Decimals
0.1 × 12.52
Multiply. What is the value of this expression?
1.252
23.77 ÷ 0.01
Divide. What is the value of this expression?
2,377
Estimate the product of 5 x 3.8
20
(3.8 rounds to 4, 5x4=20)
0.01 × 345.6
Multiply. What is the value of this expression?
3.456
4.73 ÷ 0.1
What is the value of this expression?
47.3
Dylan and his mom are buying bags of candy for his class. Each bag weighs 11.2 ounces. They buy 3 bags of candy. Write an expression to estimate the total number of ounces of candy that they have all together?
11x3
683.1 × 0.1
What is the value of this expression?
68.31
36.4 ÷ 0.1
Divide. What is the value of this expression?
364
191x2.2
Which is the best estimate of the product?
a. 400
b. 200
c. 500
d. 300
A. 400
(192x 2.2,
200x2=400)
47.85 × 0.01
What is the value of this expression?
.4785
54.64 ÷ 0.1
What is the value of this expression?
546.4
Estimate the product of 5 x 2.1
10
(5x2.1
2.1 will round to 2 so 5x2=10)
59.3 × 0.01
What is the value of this expression?
.593
438.39 ÷ 0.01
What is the value of this expression?
43,839
Kennedy went to the store to buy a pack of pens ($4.77) and paper ($1.20)
As she waited in line to pay, she realized she left her mom's debit card at home and needed to pay in cash. She lives in a sales tax-free state, so she can easily estimate her cost to see if she has enough cash. Which estimation strategy will give her an estimate closest to the exact amount?
a. She knows 4 + 1 = 5, so if she has $5.00, she will have enough to pay.
b. She knows .77 and .20 is about $1.00, which she adds to $5.00 to get $6.00.
c. She rounds $4.77 to $4.00 and $1.20 to $1.00, and then adds to get $5.00.
d. She rounds $4.77 to $5.00 and $1.20 to $2.00, and then adds to get $7.00.
B. She knows .77 and .20 is about $1.00, which she adds to $5.00 to get $6.00.