This book was created by 2nd grade students in the Advanced Math Program at Latin American School, in Monterrey, México.


This Is What We Have Learned

Books created by Elementary students (2nd to 6th graders) in the Advanced Math Program at Latin American School in Monterrey, Mexico.

BOOKS BY AMP STUDENTS

Find 726 - 238. Estimate: 700 - 200 = 500, so the answer should be about 500.

You cannot subtract 8 from 6, so you make it a 16. The difference Is 8. Now you have to subtract 3 from 2, but that is not possible either. Besides, you had borrowed 1 ten, which you now have to give back... The 3 becomes a 4 and the 2, a 12. The difference is 8. Now, you need to subtract 2 from 7, but you had borrowed 1 from the hundreds, so you have to give it back. Now take away 3 from 7, and finish finding the difference which is 4.

To subtract from a number with 0 in the tens place, you need to regroup one hundred into 10 tens. Find 207 - 98. You cannot subtract 8 from 7, so you make it a 17. The difference is 9. Now you have to subtract 9 from 0, but that is not possible either. Besides, you had borrowed 1 ten, which you now have to give back... The 9 becomes a 10 and the 0, a 10. The difference is 0. Now, you are not subtracting anything from 2, but you had borrowed 1 from the hundreds, so you have to give it back. Now take away 1 from 2, and the difference is 1. Is your answer correct? Check by adding: 109 + 98 = 207.

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Math Sticker by IENH - Instituição Evangélica de Novo Hamburgo

A multiplication is a repeated addition&#160;

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Lesson#3:Division as repeated subtraction

The repeated subtraction is when you subtract the dividend minus the divisor and the answer subtract it until you get to zero.

Estimated :60-30=30,so the answer should be about 30.

You cannot subtract 6 from 2 , so you can make it 12.

Now you need to subtract 2 from 6, but you had borrowed 1 ten, which you now have to give back…The 2 becomes a 3 and the difference to 6 is 3.

Since 36 is close to 30, the answer is resolved. Check your answer by adding: 36+26 equals 62.

A period is a group of three digits in a number,starting from the right, A comma is used to separate two periods.

Models for Subtracing 2-Digit Numbers

Here is how to subtract 2-Digit numbers

Estimate:60-40=20,should the answer should be 20

Remember:count on to find the difference 

You cannot subtract 6 from 5,so you can make it a 15.

Now you have to subtract 3from 5,but you had borrowed 1 10,which you now how to give back …The 3 becomes a 4 and the difference to 5 is 1

 Division as sharing is when you share the numbers like this.

The divisors are the circles so then you will draw circles inside the big circle(s) until you will get the dividend.

The ordinal number from 1-13 are shown below.

write the ordinal number and the ordinal word form of the number.

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You can use place-value blocks to subtract. Find 234 − 192. Estimate: 230 − 190 = 40, so the answer should be about 40.

Start in the ones place. Count on from 2 to 4. The difference is 2. Now you have to subtract 9 from 3, but that is not possible. The 3 becomes a 13 and the difference from 9 to 13 is 4. Now, you need to subtract 1 from 2, but you had borrowed 1 from the hundreds, so you have to give it back. Now take away 2 from 2, and you have finished finding the difference.

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The trick of 11 is so easy because is 11x2=22 because you need to a the number two times&#160;

So You already know the trick of the table of 11

This lesson is about using mental math to subtract 

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Is so easy because if you have 7x3=21 because you count 7 times 3 so if you have 4x6=24 because you count 4 or 6 times&#160;

In this topic we will do multiplication.

First,you will draw a picture of the dividend then circle the circles the divisor tell you and the REMINDER is the left over.

You can use multiplication fact that you already know. Like 6 and 7.

You can use a 3s fact to find a 6s fact. Find the 3s fact and then add the product to itself.

Find 6x6 3x6 = 18 3x6 = 18 the answer is 36

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3s as a factor is the table of 3 because factor means table. 3x0=0 3x1=3 3x2=6 3x3=9 3x4=12 3x5=15 and like that .

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This lesson is about subtracting with circles.

You can use the Associative Property of Multiplication to multiply three factors.The Associative Property states that  the way the factors are grouped does not change the product.

You can break apart numbers to multiply by 2-digit numbers .

Like this 11x2=22

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Raúl was in a cave he find 3 amathist rocks and 1 sapphire crystal o no the sapphire broken how many rocks does Raúl have?

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This lesson is abaut rounding to subtracting

if you know a 2s multiplication fact, you can find a 4s multiplication fact.

When you double an array of 2x1, you have 4x1.

expanded form 600+10+5 standard form 612 word form six hundred five

This lesson is about problem solving:reasonableness

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Problem Solving: Draw a Picture and Write a Number Sentence

The distance from Cleveland, OH, to Pittsburgh, PA, is 129 miles. Detroit, MI, is 170 miles away from Cleveland. How much closer is Cleveland to Pittsburgh than to Detroit?

You can subtract to find how many 170 miles miles closer Cleveland is to Pittsburgh than to Detroit.

This lesson is about Subtractions with a hundred chart

Lesson#4:Problem Solving:Use Objects or draw a Picture.

The answer was 9, because you will multiply 5X?=45.

Lets suppose that Daniel dropped a little bit of orange juice in a tile floor and covered a little bit of squares.There were 45 squares and 5 rows.How many squares were in each row?

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May The Fourth Be With You Star Wars Sticker by Harveys Seatbelt Bag

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You can use place value to order numbers. Order these from to greatest.

Comped the thousands. 1 thousand &lt; 2 thousends, so 1,362 is the least number

Word form: two thousand, two hundred sixty-three 

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