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Tokyo Math - Math Tutoring for Students in Tokyo, Japan

Nina's Math

5/16 Practice

Word problem worksheet for addition and subtraction.
www.k5learning.com/worksheets/math/grade-4-word-problems-mixed-addition-subtraction-c.pdf

​5/14 Practice

​Worksheet on table data.
www.k5learning.com/worksheets/math/grade-4-word-problems-mixed-addition-subtraction-a.pdf

Addition and subtraction word problems.
www.k5learning.com/worksheets/math/grade-4-word-problems-mixed-addition-subtraction-b.pdf

5/9 Practice
Do all ODD problems.
grade-4-missing-place-value-4-digit-number-a.pdf
File Size: 14 kb
File Type: pdf
Download File

Do all problems.
graphing_bargraphcharts.pdf
File Size: 22 kb
File Type: pdf
Download File

Do all problems.
graphing_bargraphcomp.pdf
File Size: 21 kb
File Type: pdf
Download File


5/7 Practice
Fraction to decimal conversions.
Write each decimal as a simplified fraction.
Problems that simplify: 1, 2, 3, 6, 11, 13, 15, 17.
www.k5learning.com/worksheets/math/grade-4-decimals-to-fractions-a.pdf

5/2 Practice
Fractions to decimals
www.homeschoolmath.net/worksheets/table-fraction-decimal.php?op=1&col=2&row=9&morethan1=1&mixed=1&dec=3&easy=50&powten=50&max=100&any=0&minden=3&maxden=20&exp=8&font=Arial&FontSize=12pt&pad=16&ptitle=&Submit=Submit

4/30 Practice

​Print out and do the questions on the worksheet below.
1 cm = 10 mm
1 m = 100 cm
1 m = 1000 mm
​1 km = 1000 m
grade-4-metric-units-length-km-m-cm-mm-a.pdf
File Size: 24 kb
File Type: pdf
Download File


4/25 Practice

Print out and fill out the bar graph from the file below.  (The answers are on the second page).
fruitygraphbarp2.pdf
File Size: 168 kb
File Type: pdf
Download File

Write down the answers to the questions below on a sheet of paper.  The questions refer to the dot plot to the right.

1) What is the graph about?  (Look at the title for a clue).

2) Which snack is the most popular?

3) Which snack is the least popular?

4) What is the maximum?

5) What is the minimum?

6) What is the range? (Maximum - Minimum)
Picture

4/23 Practice

1) Do the multiplications using BOTH ways.

25 x 48

59 x 34

Do this worksheet on ordering fractions below.
grade-4-ordering-3-fractions-b.pdf
File Size: 227 kb
File Type: pdf
Download File


4/18 Practice

​1) Do problems #9 - 16 (for converting decimals to fractions).  Make sure the fractions are SIMPLIFIED.
converting_fractions_decimals.pdf
File Size: 22 kb
File Type: pdf
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2) Do all problems (for angles).
angles.pdf
File Size: 77 kb
File Type: pdf
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4/11 Practice

1) Do the multiplication using BOTH ways.

47 x  36

2) Change the decimals on the worksheet below into fractions.  Make sure to simplify the fractions at the end.  For example, 30/100 would become 3/10 since both 30 and 100 can be divided by 10.
decimals_to_fractions.pdf
File Size: 22 kb
File Type: pdf
Download File


4/9 Practice

1) Do the two multiplications using BOTH ways.

34 x 63

78 x 56

2) Do the worksheet below for converting between fractions and decimals.

​*Tip: To turn 8 in the denominator (the bottom of the fraction) into 1000, multiply 8 x 5 x 25.  Do the same to the number in the numerator (the top of the fraction).

These are approximations on the worksheet for #10, 11, 13, and 19:
1/3 is about equal to .333
2/3 is about equal to .667
converting_fractions_decimals.pdf
File Size: 22 kb
File Type: pdf
Download File


4/4 Practice
​

1) Do the two multiplications using BOTH ways.

24 x 57

38 x 15

2) Do all the problems on the link below for adding fractions and showing them with pictures.  You can check the answers at the bottom of the file.
mixed_number_addition.pdf
File Size: 171 kb
File Type: pdf
Download File


3/28 Practice

Please do pages 8 and 9 of the PDF file below.  It should say "Fractions & Division Tables" and "Comparing, Adding, & Subtracting Fractions" at the top of the pages.
marina_coursework.pdf
File Size: 3422 kb
File Type: pdf
Download File


3/26 Practice

Please do these two things for homework.

1) Multiply the following numbers using BOTH the area way and vertical way.

37 x 52

68 x 49

2) Fill in the page that says "Fractions & Mixed Numbers" on the worksheet that your dad printed out.  Do questions a, b, and c by showing the fractions using the three ways shown in the picture below.  (If the number line way is hard, we can look at that together next time during tutoring, so at least do the circle way and square/rectangle way of showing fractions).

​I showed how to do 7/4 with the writing shown in blue.  That can be used as an example for how you can show 9/8, 19/16, and 10/4.
​
Picture

3/23 Practice

Please do these two things for homework.

1) Multiply the following numbers using BOTH the area way and vertical way.

52 x 67

44 x 86
​

2) Do the 6th page on the PDF file below.  It is the page that says "Mario's Marbles" at the top.
marina_coursework.pdf
File Size: 3422 kb
File Type: pdf
Download File


3/21 Practice
For today's homework, do these 2 things.

1) Multiply the numbers shown below using BOTH the rectangle area way and the vertical multiplication way.

26 x 43

54 x 37

2) Fill out the blanks in these ratio tables.
Picture

 3/16 Practice
First watch these two videos on multiplying a 2 digit number by another 2 digit number.
Video 1: www.youtube.com/watch?v=mJFhmJbpxC0
Video 2: www.youtube.com/watch?v=DaQlieZH1kk

Next, do these three multiplications on paper using BOTH the area model and the way shown in the videos.  There is a picture for the area model to the right.

Please do each of these three multiplications using both the methods listed above.  

1)  24 x 18

2)  31 x 29

3)  42 x 35​
​Reminder: Here is the area model for multiplication.
Picture

3/13 Practice

First watch these two videos on multiplying a 2 digit number by another 2 digit number.
Video 1: www.youtube.com/watch?v=mJFhmJbpxC0
Video 2: www.youtube.com/watch?v=DaQlieZH1kk

Next, do these three multiplications on paper using BOTH the area model and the way shown in the videos.  There is a picture for the area model to the right.

Please do each of these three multiplications using both the methods listed above.  

1)  23 x 16

2) 35 x 27

3) 46 x 59
Reminder: Here is the area model for multiplication.
Picture

3/9 Practice Problems
Only page 2
marina_coursework.pdf
File Size: 3422 kb
File Type: pdf
Download File


3/6 Practice Problems
Only page 1
marina_coursework.pdf
File Size: 3422 kb
File Type: pdf
Download File


3/2 Practice Problems
Only page 4
marina_coursework.pdf
File Size: 3422 kb
File Type: pdf
Download File


2/27 Practice Problems
1-8 All
www.k5learning.com/worksheets/math/grade-4-geometry-rectangles-area-perimeter-b.pdf

Picture
2/20 Practice Problems
www.k5learning.com/worksheets/math/grade-4-geometry-rectangles-area-perimeter-a.pdf

To get an equal fraction, multiply or divide the top and bottom by the same number.
Picture
Multiply the top and bottom by the same number to get equal fractions.
Picture
Divide the top and bottom by the same number to get equal fractions.
​To add or subtract fractions, make a common denominator.
Picture
Make a common denominator to add fractions.
Picture
Make a common denominator to subtract fractions.
2/13 Practice Problems

Do questions #1, 3, 6, 7, 8, 13, 14, 16
www.lavc.edu/math/library/math105/Worksheets/fractASLCD1.pdf

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