Buzz
Solving 4th-grade math problems on pages 88 and 89 in VBT collection 2, Reviewing operations with natural numbers (Continued), exercise 156 provides solutions and guidance for exercises 1, 2, 3, 4, and 5. Students can refer to strengthen their approach to solving problems involving operations with natural numbers.
Solving 4th-grade math problems on pages 88 and 89 in VBT collection 2, Reviewing operations with natural numbers (Continued), exercise 156
1. Solve Exercise 1 - Mathematics workbook for 4th grade collection 2 page 88
Given problem:
Set up and calculate:
1806 multiplied by 23
326 multiplied by 142
Calculate:
13840 divided by 24
28832 divided by 272
Method:
For division: Set up the calculation vertically, then divide from left to right.
Answer:
2. Solve Exercise 2 - Mathematics workbook for 4th grade collection 2 page 88
Problem:
Find x:
a) x times 30 equals 1320
b) x divided by 24 equals 65
Solution Method
To find a factor, take the product and divide by the other factor.
To find the dividend, multiply by the quotient with the divisor.
Answer
a) x times 30 equals 1320
x equals 1320 divided by 30
x equals 44
b) x divided by 24 equals 65
x equals 65 times 24
x equals 1560
3. Solve Exercise 3 - Mathematics workbook for 4th grade collection 2 page 88
Problem:
Fill in the blank with an appropriate word or number:
Three times a equals what times a?
Divide a by 1 equals what?
The product of a and b, multiplied by 5, equals what times the product of b and 5?
Divide a by a equals what, where a is not equal to 0?
a times 1 equals 1 times what equals what?
Divide 0 by a equals what, where a is not equal to 0?
Double the quantity of (m plus n) equals 2 times m plus 2 times what?
Solution Method
Recall the properties learned in multiplication and division, then fill in the blanks with appropriate numbers or words.
Answer
a times 3 equals 3 times a
Divide a by 1 equals a
The product of (a times b) times 5 equals a times (b times 5)
Divide a by a equals 1, where a is not equal to 0
a times 1 equals 1 times a equals a
Divide 0 by a equals 0, where a is not equal to 0
Double the sum of (m plus n) equals twice m plus twice n
4. Solve problem 4 - Math workbook for Grade 4 exercise 2 page 89
Problem Statement:
Fill in the blanks with appropriate symbols:
35 times 11 equals .... 385
1298 times 0 equals .... 150
17 times 100 equals .... 1800
54 times 72 equals .... 72 times 54
1600 divided by 10 equals .... 106
24 .... 2400 divided by 100
Solution Method
- Calculate the value of each side.
- Compare and then fill in the blanks with the appropriate symbols.
Answer
5. Solve problem 5 - Math workbook for Grade 4 exercise 2 page 89
Problem Statement:
An walks from home to school, covering a distance of 84m per minute and taking 15 minutes. If An rides a bike from home to school, covering a distance of how many minutes per minute?
Solution Method
- Find the distance from home to school: Multiply the length of the walking distance per minute by 15.
- Find the time An takes to ride a bike for that distance: Divide the distance from home to school, just found, by 180.
Answer
The length of the road An travels from home to school is:
84 times 15 equals 1260 (meters)
If An rides a bike from home to school, it takes him:
1260 divided by 180 equals 7 (minutes)
Answer: 7 minutes.
You are viewing the guide to Solve Grade 4 Math Page 88, 89 VBT Exercise 2 Review of operations with natural numbers (continued) Lesson 156. You can review the guide for Solve Grade 4 Math Page 87, 88 VBT Exercise 2 Review of operations with natural numbers or preview the guide for Solve Grade 4 Math Page 89, 90 VBT Exercise 2 Review of operations with natural numbers (continued) to understand more about the lesson.
