Lock Quiz: Math (Lesson)

Lock Quiz: Math (Lesson)

Learn all the problems without taking the quiz!

Table of Contents

• Easy Level...............Slide 3

• Moderate Level.....Slide 9

• Hard Level...............Slide 21

• Middle School Level....Slide 33

• Polls............................Slide 45

Easy Level!

Problems 1 and 2

Problem 1: 32+32

Let's break the numbers up into tens and ones.

This is our new problem:

(30+30)+(2+2)

Everyone knows 2+2=4. So we put (30+30)+4. 3+3=6, but since the 3's are in the tens, we add a 0. So the answer is 64, because it is 60+4.

Problem 2: 3x6

Let's use simplification.

Multiplication is repeated addition. Let's do 6+6+6. 6+6=12, + another 6 is 18. There. 6x3=18.

Problems 3 & 4

Problem 3:
32 divided by 4
So division is repeated subtraction. So you are supposed to do 32-4 and subtract 4 until you get it to 0. 32-4-4=24. 24-4-4-4-4=8. That's 6 times. 8-4-4=0, Making the answer 8, because you subtracted 4 8 times.
Problem 4:

2901-807
Break it up.
2000+900+1-800-7.
2000-0=2000. 900-100 (for regrouping the ones) -800=0. 101-7=94. 2000+94=2,094. Answer=2094.

Now would be a check!

It would be the lock. The lock is the first number of every correct answer in order.

The answer was 6182. Now since this isn't the lock quiz, that wasn't the lock. Explanation below.

So the first number of the correct answer on problem 1 was 6 because the answer was 64. The first number of the correct answer of problem 2 was 1 because the answer was 18. The first number of the correct answer on problem 3 was 8 because the answer was 8. The first number of the correct answer of problem 4 was 2 because the answer was 2094.

From now on, you will try to solve the problem and I will explain after that. You will find a contents list after each explanation.

Moderate Level

Moderate level all problems.

Problem 1 - Next Slide

Problem 2 - Slide 13

Problem 3 - Slide 15

Problem 4 - Slide 17

Lock 2 - Slide 19

Multiple Choice

64 x 1.5 +32

• 126

• 128

• 130

• 127

The Correct Answer was 128.

64 x 1.5 or 1 1/2.

Change that to 32x3. 96 is the answer. Then add another 32. That makes is 128, because it is 96+32. Tens=120. Ones=8. 120+8=128.

Problem 2 - Next Slide

Problem 3 - Slide 15

Problem 4 - Slide 17

Lock 2 - Slide 19

Multiple Select

Name 3 ways you can make 1/2 of the first number subtracting. This is not in the lock.

• 1-1/2

• 1/2 of 3

• 2-1/2-1/2

• 12-1/2-1/2

• 2-1

The correct answers were A, C, and E.

A is 1-1/2. That equals 1/2. C 2-1/2-1/2. It equals 1. E is 2-1, which obviously equals 1.

Problem 3 - Next Slide

Problem 4 - Slide 17

Lock 2 - Slide 19

Multiple Choice

1234+4321

• 1234

• 43211234

• 5555

• 5432

The correct answer was 5555.

1+4=5. 2+3=5 3+2=5 4+1=5

Problem 4 - Next Slide

Lock 2 - Slide 19

Multiple Choice

321 divided by .5 or 1/2

• 160.5 or 160 1/2

• 161.5 or 161 1/2

The correct answer was 160.5.

Use division with remainders. 1/2 of 321 is impossible if you use just normal numbers, so you have to bring it down to the decimals. If you do, you can now break a half into each circle. 160 1/2 is right because now that you broke one in half, you no longer have that whole.

Lock 2 - Next Slide

The correct answer was 151.

Hard Level

Hard level all problems.

Problem 1 - Next Slide

Problem 2 - Slide 25

Problem 3 - Slide 27

Problem 4 - Slide 29

Lock 3 - Slide 31

Multiple Choice

1234x1234

• 1040916

• 1456789

The correct answer was 1040916.

Break it up. You can do 1000x1000. It equals 1,000,000 because you multiply the ones since it is the only non-zero number then you add all the 0's. Then 200x200=400,00. 30x30=900. 4x4=16. Add it all together.

Problem 2 - Next Slide

Problem 3 - Slide 27

Problem 4 - Slide 29

Lock 3 - Slide 31

Multiple Choice

132.4567 divided by 123.7654

• 1.5

• 1.6

• 1.7

The correct answer is 1.7.

No explanation.

Problem 3 - Next Slide

Problem 4 - Slide 29

Lock 3 - Slide 31

Multiple Choice

1234567890-987654321

• 246913569

• 9

The correct answer was 246913569.

No explanation.

Problem 4 - Next Slide

Lock 3 - Slide 31

Multiple Choice

23542815+5876345934

• 58998887495899888749

• 5899888749

• 58998887491

• 58998887491234567890

The correct answer was 5899888749.

I put random numbers up there.

Lock 3 - Next Slide

The correct answer was 1125.

Middle School Level

No more explanations!

Middle School level all problems.

Problem 1 - Next Slide

Problem 2 - Slide 37

Problem 3 - Slide 39

Problem 4 - Slide 41

Lock 4 - Slide 43

Multiple Choice

13.23x456.43

• 6038.5688

• 6038.5678

• 6038.5689

• 6038

The correct answer was 6038.5689.

Problem 2 - Next Slide

Problem 3 - Slide 39

Problem 4 - Slide 41

Lock 4 - Slide 43

Multiple Choice

1234567890-0987654321-123456789-54321

• 123456789

• 123402459

• 987654321

• 111111111

The correct answer was 123402459.

Problem 3 - Next Slide

Problem 4 - Slide 41

Lock 4 - Slide 43

Multiple Select

23.987654321 ÷ 123456789

• 8.9

• 8.7

• 8.00000007

• 8

The correct answers were 8.000007 and 8.

Problem 4 - Next Slide

Lock 4 - Slide 43

Multiple Choice

987654321+1234567890000000000

• 123456789987654322

• 123456789987654321

• 123456789987654325

• 123456789987654320

The correct answer was 123456789987654321.

Lock 4 - Next Slide

The correct answer was 6181

Polls

Polls all questions.

Rating - Slide 48

Feedback - Slide 49

Thank You - Slide 50

These polls don't count in the report; they're marked correct.

Poll

Rating

• 1

• 2

• 3

• 4 or 5

Open Ended

If you said 4 or 5, which is it? Also, give me feedback. Say none if you have no feedback.

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