"Round" of Applause 👏
Give a Little, Take a Little 🔄
It All Adds Up ➕
What’s the Difference? 🤔
Keep the Change! 💵
100
Round 8.67 to the nearest hundreth
8.68
100
Fill in the blank: 3.99 + 2.45 = 4.00 + ___
2.44
100
4.6 + 3.2 = m. What is m?
m = 7.8
100
9.7 − 4.2 = h. What is h?
h = 5.5
100
A notebook costs $3.45 and a pen costs $2.30. What is the total cost?
$5.75
200
Estimate 14.26 + 5.81 by rounding each number to the nearest whole number.
Include the rounded equation.
14 + 6 = 20
200
Fill in the blank: 6.28 + 4.57 = 6.30 + ___
4.55
200
7.5 + 12.34 = m. What is m?
m = 19.84
200
Subtract: 16.85 − 3.4.
13.45
200
You buy a snack for $6.78 and pay with a $10 bill. How much change do you get?
$3.22
300
Estimate 23.54 + 12.38 by rounding each number to the nearest tenth.
Include the rounded equation.
23.5 + 12.4 = 35.9
300
Fill in the blank: 15.73 − 4.98 = ___ − 5.00
15.75
300
C. 1.36+0.85
300
Subtract: 8.6 − 3.27.
5.33
300
A teacher starts with $64.80 and has $18.25 left after shopping. Round each amount to the nearest whole dollar to estimate how much she spent.
$65 − $18 = $47
400
Estimate 46.72 − 18.24 by rounding each number to the nearest whole number.
Include the rounded equation
47 − 18 = 29
400
Use compensation to solve 9.98 + 6.47. Show your new equation.
10.00 + 6.45 = 16.45
400
Add: 18.76 + 9.58.
28.34
400
Subtract: 24.03 − 8.16.
15.87
400
A game costs $24.65 and a puzzle costs $8.79. You pay with two $20 bills. How much change do you get? Show your equations.
$24.65 + $8.79 = $33.44 total. $40.00 − $33.44 = $6.56 change.
500
Estimate 18.65 + 7.23 + 4.85 by rounding each number to the nearest tenth.
Include the rounded equation
18.7 + 7.2 + 4.9 = 30.8
500
A student writes 20 − 7.99 = 12. Explain the mistake and write a correct compensation equation.
Since the student added 0.01 to 7.99, they have to take away 0.01 at the end to compensate.
They could also subtract 0.01 from 20 to compensate.
The sum is 12.01
500
B. 1.14+0.62
500
A student says 12.4 − 5.68 = 7.28. Is the student correct? Use the standard algorithm to find the correct difference.
No. 12.40 − 5.68 = 6.72. Regroup before subtracting.
500
A student buys sneakers for $46.85 and socks for $7.68. He pays with four $20 bills. Explain what you know, what you need to find, and show labeled equations to find his change.
He pays $80 and needs to find his change. $46.85 + $7.68 = $54.53 total cost. $80.00 − $54.53 = $25.47 change.