Four-digit numbers 1.1. Four-digit numbers Number includes 1 thousand, 4 hundred, 2 tens, 3 units. Written as : 1423. Read as : One thousand four hundred twenty-three. 1.2. Four-digit numbers (continued) ROW WRITE NUMBERS READ MORE thousand hundred Dozen Unit 2 0 0 0 2000 two … [Read more...] about Four-digit numbers
Rectangle, Square, Perimeter of Rectangle, Square
Rectangle, Square, Perimeter of Rectangle, Square 1.1. Rectangle Rectangle ABCD has : The four vertices A, B, C, and D are all right angles. 4 sides include: 2 long sides are AB and CD, 2 short sides are AD and BC. Two long sides have the same length, written as: AB = CD. The two short sides have the same length, written as: AD = BC. A … [Read more...] about Rectangle, Square, Perimeter of Rectangle, Square
Get familiar with expressions + Find expression values
Get familiar with expressions + Find expression values 1.1. Get familiar with the expression 1.1.1. Example of the expression 126 + 51 ; 62 - 11 ; 13 x 3 ; 84 : 4 ; 125 + 10 - 4 ; 125 + 10 - 4 ; 45 : 5 + 7 ; ... are expressions. 1.1.2. The value of the expression 126 + 51 = 177. The value of the expression 126 + 51 is 177. 125 + 10 - 4 = 131. The … [Read more...] about Get familiar with expressions + Find expression values
Introduction of the multiplication table
■Introduction of the multiplication table ■Introducing the multiplication table. ===== … [Read more...] about Introduction of the multiplication table
9 . division table
9 . division table Lesson 1: Mental arithmetic a) 9 × 6 = 9 × 7 = 9 × 8 = 9 × 9 = 54 : 9 = 63 : 9 = 72 : 9 = 81 : 9 = b) 18 : 9 = 27 : 9 = 36 : 9 = 45 : 9 = 18 : 2 = 27:3 = 36 : 4 = 45 : 5 = Solution guide: Mentally find the value of multiplication and division in the learned range and then fill in the results in the blanks. a) 9 × 6 = 54 9 × 7 = 63 9 × … [Read more...] about 9 . division table
Gram Unit
Gram Unit 1.1. Knowledge to remember The gram is a unit of measurement for mass. Gram is abbreviated as g. 1000g = 1kg In addition to the 1kg, 2kg and 5kg weights, there are also weights: 1g, 2g, 5g 10g, 20g, 50g 100g, 200, 500g. 1.2. Solving Textbook Exercises Lesson 1: Solution guide: Read or calculate the total mass of the weights of the … [Read more...] about Gram Unit
9 . multiplication table
9 . multiplication table Lesson 1: Mental arithmetic a) 9 x 1 = 9 x 5 = 9 x 4 = 9 x 10 = 9 x 2 = 9 x 7 = 9 x 8 = 9 x 0 = 9 x 3 = 9 x 9 = 9 x 6 = 0 x 9 = b) 9 x 2 = 9 x 5 = 9 x 8 = 9 x 10 = 2 x 9 = 5 x 9 = 8 x 9 = 10 x 9 = Solution guide: Review the multiplication tables in the range learned and then fill in the results in the blanks. a) 9 x 1 = 9 9 … [Read more...] about 9 . multiplication table
Compare small numbers by a fraction of large numbers
Compare small numbers by a fraction of large numbers 1.1. Knowledge to remember 1.1.1. For example The length of line segment CD is 3 times the length of line segment AB. We say that: Length of line segment AB is equal to \(\frac{1}{3}\) length of line segment CD. 1.1.2. Problem Mother is 30 years old, daughter is 6 years old. Ask how many times the age of … [Read more...] about Compare small numbers by a fraction of large numbers
8 . division table
8 . division table Lesson 1: Mental arithmetic a) 8 x 6 = 8 x 7 = 8 x 8 = 8 x 9 = 48 : 8 = 56 : 8 = 64 : 8 = 72 : 8 = b) 16 : 8 = 24 : 8 = 32 : 8 = 40 : 8 = 16 : 2 = 24 : 3 = 32 : 4 = 40 : 5 = Solution guide: Use what you have learned about multiplication and division tables within 8, mentally and then fill in the blanks with the appropriate number. a) 8 … [Read more...] about 8 . division table
Compare how many times the larger number is than the smaller number
Compare how many times the larger number is than the smaller number 1.1. Knowledge to remember Problem: Line segment AB is 6cm long and line segment CD is 2cm long. How many times longer is the line segment AB than the line segment CD? Summary: Solution: The length of line segment AB is several times the length of line segment CD: 6: 2 = 3 (times) … [Read more...] about Compare how many times the larger number is than the smaller number