Estimate
3.92 + 6.14 = ___
4 + 6 = 10
3.9 + 6.1 = 10.0
0.46 + 0.29
0.75
0.7 - 0.2
0.5
Where Richard lives, the average high temperature in March is 53.7 degrees. The average low temperature in March is 42.1 degrees. What is the best estimate for the difference between the average high and low temperatures in March?
54 - 42 = about 12 degrees
What is my first name?
Extra points for correct spelling!
McKenzi
5.42 - 1.7 = ___
5 - 2 = 3
5.4 - 1.7 = 3.7
0.59 + 0.87
1.46
0.54 - 0.38
0.16
Mindy rode 12.38 miles yesterday. She rode 11.9 miles today. How many miles did Mindy ride both days?
12.38 + 11.9 = 24.29 miles
What is my boyfriends first name?
Trevor
16.28 - 5.9 = _____
16 - 6 = 10
16.3 - 5.9 = 10.4
0.79 + 1.4
2.19
2.7 - 1.68
1.02
A new crayon is 14.82 centimeters long. A crayon that Bea has been using is now 5.73 centimeters. How much longer is the new crayon?
14.82 - 5.73 = 9.09 centimeters
What are my sons' names?
Tatum and Nash
A baby rabbit weighs 24.8 grams. A veterinarian predicts the rabbit will weigh about 64.5 grams by the next visit. About how much weight will the rabbit gain?
65 - 25 = 40 grams
Sage has a fitness goal of traveling 1.6 miles each day. She bikes 0.3 mile. She then runs another 1.2 miles. Then, she swims 0.25 mile. Did Sage reach her goal? Explain how you solved the problem.
Yes, Sage reached her goal because I added 0.3 and 1.2 and got 1.5, then I added that with 0.25 and got a final answer of 1.75 miles. I used standard algorithm.
Harry subtracts 0.3 from 0.88. He states that the difference cannot be greater than 0.5. Do you agree? Why or why not?
No, the difference will be greater than 0.5 because 0.8 - 0.3 = 0.5, and 0.88 is greater than 0.8 so the actual answer would be even bigger.
Janice makes 4.4 cups of iced tea. After serving the iced tea to friends, she has 1.29 cups left. About how many cups of iced tea did Janice serve to her guests?
4 - 1 = about 3 cups
What animals do I have?
A dog and cat
Charles had $20 to spend at the zoo. His ticket costs $11.25, and he spent $4.39 for lunch. Charles says he spent about $15 so far. Charles thinks he has enough money to buy a $4.99 souvenir. Do you agree with Charles? Explain.
$11 + $4 = $15
Charles does have about $15 left to spend, but that estimate is actually less than his actual amount, so he does not have enough money for the souvenir. $11.3 + $4.4 = $15.7
Scott adds 54.37 + 19.28 by writing 50 + 10 + 4 + 9 + 0.3 + 0.2 + 0.07 + 0.04. Is Scott's work correct? Why or why not? What strategy is he using?
Scott's work is not correct. He is using partial sums to add, but he should have added 0.08 for his last addend, not 0.04.
Casey lives on the east side of town and is 25.2 kilometers from the hockey arena. Terry lives on the west side of town and is 18.75 kilometers from the hockey arena. How much farther away from the hockey arena does Casey live than Terry?
6.45 kilometers
The fifth grade class paints a mural that covers 35.2 square feet. The fourth grade class paints a mural that covers 27.67 square feet. How much of the total wall did they cover? How much more wall space did fifth grade cover than fourth grade?
35.2 + 27.67 = 62.87 square feet in total
35.2 - 27.67 = 7.53 square feet more than fourth grade
What grades have I taught in the past?
Kindergarten, 3rd, and 4th