Estimate:
486 + 732=
*Which of the following is closest to the sum:
900 1,200 1,500 1,800
Number Model:
______ + _______= ________
What is
1,200
500 + 700 = 1,200
100
If the rule is * 5, then:
In= 6
Out = ?
What is 30
100
Solve:
9.1 + 1.1 =
What is 10.2
100
Draw a line that is 3 inches long.
Measure the line to the nearest half centimeter.
What is 7.5 centimeters
100
Solve:
____= 101.06 - 29.91
What is 71.15
200
Estimate:
221 + 254=
*Which of the following is closest to the sum:
600 500 400 300
Number model:
______+ _____ = _______
What is
500
Number model:
200 + 300 = 500
200
If the rule is * 20, then:
In= ?
Out= 1,200
What is 60
200
Solve:
10.72 - 8.27 =
What is 2.45
200
Draw a line that is 2 1/4 inches long.
Measure the line to the nearest half centimeter.
What is 6 centimeters.
200
Multiply using any method:
300 * 5
What is 1,500.
300
Estimate:
297 + 113 + 454 =
*Which of the following is closest to the sum:
800 900 1,000 750
Number model:
______+ ______ = ______
What is
900
Number model:
300 + 100 + 500 = 900
300
What is the rule:
In= 8
Out = 560
In= 9
Out = 630
What is * 70
300
Solve:
12.86 - 9.34
What is 3.52
300
Draw a line that is 3 1/4 inches long.
Measure the line to the nearest half centimeter.
What is 9.5 centimeters
300
Solve:
______= 33.67 + 5.9
What is 39.57
400
Estimate whether the product will be in the tens. hundreds, thousands or more.
Write a number model to show how you got your estimate. Then multiply to get the exact answer.
27 * 67
What is
30 * 70 = 2,100
Answer is in the thousands
Exact answer: 1,809
400
Use partial-products to multiply
241 * 3 = ?
What is
723
400
Solve:
18.75 + 6.32 =
What is 25.07
400
Draw a line that is 5 1/4 inches long.
Measure the line to the nearest half centimeter.
What is 13 centimeters
400
Multiply:
124 * 78 =
What is 9,672
500
Estimate whether the product will be in the tens, hundreds, thousands, or more. Write a number model to show how you got your estimate.
35 * 62 =
Then multiply to find the exact answer.
What is
40 * 60 = 2,400
Answer is in the thousands
Exact answer: 2,170
500
Use the lattice method to multiply
42 * 6 = ?
What is 252
500
Explain the mistake that Hannah made when she solved this problem:
0.07
- 0.6
-------
0.01
What is answers will vary:
She did not line up the decimals
500
Draw a line that is 6 centimeters long.
Measure the line to the nearest 1/4 inch.