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Grade 3 Math

Practice solving math problems

07/16/2021 by admin Leave a Comment

Practice solving math problems 1.1. Practice solving math problems Lesson 1 page 176: Two years ago the population of a commune was 5236 people, last year the population of the commune increased by 87 people, this year increased by 75 people. Calculate the population of the commune this year. Solution guide: Summary Two years ago : 5236 people Last year: … [Read more...] about Practice solving math problems

Geometry review

07/16/2021 by admin Leave a Comment

Geometry review 1.1. Geometry review Lesson 1 page 174: In the picture below a) How many right angles are there? Name the vertex and side of each right angle b) What is the midpoint of line segment AB? What is the midpoint of line segment ED? c) Determine the midpoint of line segment AE and line segment MN (shading those midpoints on the figure). Solution … [Read more...] about Geometry review

Quantitative practice

07/16/2021 by admin Leave a Comment

Quantitative practice Lesson 1 page 172: Circle the word in front of the correct answer: 7m3cm = ? A. 73cm B. 703cm C. 730cm D. 7003cm Solution guide: Convert 7m to centimeters and add 3cm. Choose the correct answer from the given answers. Solution : We have: 7m 3cm = 700cm + 3cm = 703cm. Circle the letter B. Lesson 2 page 173: Look at the picture below and … [Read more...] about Quantitative practice

Review four calculations within 100 000

07/16/2021 by admin Leave a Comment

Review four calculations within 100 000 1.1. Review four calculations within 100 000 Lesson 1 page 170: Mental arithmetic a. 50000 + 20000 b. 25000 + 3000 80000 – 40000 42000 – 2000 c. 20000 x 3 d. 12000 x 2 60000 : 2 36000 : 6 Solution guide: I take the non-zero digits to do the calculation and then add as many zeros as zero to the end of the … [Read more...] about Review four calculations within 100 000

Review numbers up to 100 000

07/16/2021 by admin Leave a Comment

Review numbers up to 100 000 1.1. Review numbers up to 100 000 Lesson 1 page 169: Write the correct numbers on each line Solution guide: Count down to 10,000 units and fill in the blanks with the missing number. Count down 5,000 units and then fill in the missing number. Lesson 2 page 169: Read the numbers : 36 982 ; 54 175 ; 90 631 ; 14 034 ; 8066 … [Read more...] about Review numbers up to 100 000

Divide a five-digit number by a single-digit number

07/16/2021 by admin Leave a Comment

Divide a five-digit number by a single-digit number 1.1. Knowledge to remember 37648 : 4 = ? \(\begin{array}{l}\begin{array}{*{20}{c}}{37648}\\{16}\end{array}\left| {\begin{array}{*{20}{c}}4\\\hline{9412}\end{array}} \right.\\\,\,\,\,\,\,\,04\\\,\,\,\,\,\,\,\,\,\,08\\\,\,\,\,\,\,\,\,\,\,\,\,\,0\end{array}\) 37648 : 4 = ... 37 divided by 4 get 9, write 9. … [Read more...] about Divide a five-digit number by a single-digit number

Multiply a five-digit number by a single-digit number

07/16/2021 by admin Leave a Comment

Multiply a five-digit number by a single-digit number 1.1. Knowledge to remember 14273 x 3 = ? \(\begin{array}{l}\underline { \times \begin{array}{*{20}{c}}{14273}\\{\,\,\,\,\,\,\,\,\,\,\,3}\end{array}} \\\,\,\,\,\,42819\end{array}\) 14273 x 3 = ... 3 times 3 equals 9, write 9. 3 times 7 equals 21, write 1 remember 2. 3 times 2 equals 6 , add 2 equals 8, … [Read more...] about Multiply a five-digit number by a single-digit number

Subtraction of numbers in the range 100000

07/16/2021 by admin Leave a Comment

Subtraction of numbers in the range 100000 1.1. Knowledge to remember 85674 - 58329 = ? 85674 - 58329 = ... 4 does not subtract 9, take 14 minus 9 equals 5, write 5 remember 1. 2 plus 1 equals 3; 7 minus 3 equals 4, write 4. 5 does not subtract 8, take 15 minus 8 equals 7, write 7 remember 1. 5 plus 1 equals 6; 8 minus 6 equals 2, write 2. 1.2. … [Read more...] about Subtraction of numbers in the range 100000

Addition of numbers in the range 100000

07/16/2021 by admin Leave a Comment

Addition of numbers in the range 100000 Lesson 1: Calculate (according to form) a) \(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{63548}\\{19256}\end{array}} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\underline { + \begin{array}{ *{20}{c}}{52379}\\{38421}\end{array}} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\underline { + … [Read more...] about Addition of numbers in the range 100000

Area of ​​rectangles and squares

07/16/2021 by admin Leave a Comment

Area of ​​rectangles and squares Lesson 1: Find the area and perimeter of a rectangle with length 4 cm and width 8 cm. Solution guide: The area of ​​a rectangle is equal to the length times the width (same unit of measure). Perimeter of a rectangle is equal to length plus width (same units) and then multiply by two. Solution Change: 4dm = 40cm The area of … [Read more...] about Area of ​​rectangles and squares

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