Multiplication/Division
What is the name of the typical way to solve multi-digit multiplication problems in the United States?
The U.S. Standard Algorithm.
TRUE or FALSE?
Addition always comes BEFORE subtraction when solving order of operations problems.
False.
Which fraction is bigger?
7/8 OR 9/10?
9/10 is bigger.
What is the name of the small dot between numbers like 1.06?
A decimal point.
What is the name for the imaginary rod that runs through the middle of the Earth? (hint: we spin around this rod!)
The Earth's axis.
Solve the following equation.
216 % 4.
54.
Solve the following equation:
11 - 2 + 3 x (9 + 4)
48.
Name THREE fractions that are equivalent to 3/4.
6/8, 9/12, 12/16, 15/20, etc.
Solve the following equation.
.14 - .90
.5
TRUE or FALSE:
When baking soda mixes with vinegar, the baking soda dissolves and is completely gone. Explain WHY your answer is correct.
False. The baking soda becomes carbon dioxide.
Max is solving the following equation using the Standard Algorithm. What should be the THIRD step in his Standard Algorithm process?
134 x 12.
He should solve 2 x 1 and put the answer below the line.
What are ALL THREE of the Order of Operations rules? Must have all three to be correct.
- Grouping symbols come first.
- Multiplication/division happen before addition/subtraction.
- Solve from left to right.
Solve the following equation.
4 students equally share 1/8 of a bag of popcorn. How much popcorn does each student get?
They each get 1/32.
Which decimal is BIGGER? How do you know?
.0067 OR .012?
.012 is bigger because it has numbers in the hundreds spot, where .0067 does not.
Describe the reasoning why shadows look longer at noon (12pm) in the winter than they do at the same time in the summer.
Shadows are longer due to the sun's positioning in the sky; it is "later" in the day because the sun is lower in the sky in winter, so the shadow is at an angle.
Solve the following equation.
A school is ordering supplies for a school wide Field Day. They order 992 water bottles spread throughout 16 classes. How many water bottles does each class get?
Each class gets 62 water bottles.
Solve the following equation. (The % sign is a division symbol here).
110 % 10 - 4 x 2 +18
21.
Martha has 12 yards of ribbon. She needs 1/3 of a yard to make a bow. She then gives 21 bows away. How many bows does she have left?
15 bows.
Solve the following equation.
.0035 + .0410 + .2000
.6135.
What is the name for the area in space where planets could potentially support life? Give me the name AND BOTH things that planet would need for life to grow.
The 'Goldilocks', or Habitable Zone, is the distance from a star where a planet could support life. The planet would need proper light and liquid water for life to grow there. (the planet needs to be the right temperature for both).
Solve the following equation.
Samuel is filling baskets for apple-picking season at his orchard. He has 275 baskets, and each basket can hold 66 apples. How many apples will he have total?
He will have 18,150 apples total.
Solve the following equation.
20 + 2 x 6 - [(24 x 2) - 40]
24.
Solve the following equation. ANSWER MUST BE IN PROPER FORM!
A trail hike is 6/8 of a mile long. Mary walks the trail 5 times during the week, and 6 times the next week. How many miles did she walk total?
8 and 2/8 miles.
Solve the following equation.
.88 + .032 - (.16 - .04)
.792.
What evidence do scientists have that a meteor is a likely reason why the dinosaurs went extinct? Describe what was found that may prove this theory. HINT: what evidence would a meteor leave behind?
The Chicxulub Crater in Latin America is a huge underwater crater that is likely from the meteor. Also correct: tiny metal dust was found all over the world, which tells us that lots of ash must have been in the atmosphere at some point.