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Master
Practise
Compete
Concepts
Lesson 3
This lesson is not available for trial.
1 h 27 min
Remainder Concept
20 min
Let’s Try! Remainder Concept
21 min
Equal Concept
14 min
Common Friends Concept I
18 min
Common Friends Concept II
14 min
Worksheet PDF
Answer PDF
Lesson 4
This lesson is not available for trial.
1 h 22 min
One type did not change
18 min
Total did not change
14 min
Difference did not change
21 min
Let’s Identify and Solve! I
16 min
Let’s Identify and Solve! II
13 min
Worksheet PDF
Answer PDF
Lesson 5
This lesson is not available for trial.
1 h 47 min
Use of equations and "Crossing the bridge"
11 min
Balancing Equations
8 min
2 unknowns
17 min
Let’s Try! Use of Equations I
20 min
Let’s Try! Use of Equations II
25 min
Let’s Try! Use of Equations III
26 min
Worksheet PDF
Answer PDF
Lesson 8
1 h 16 min
Double If
14 min
Let's Try! April and August each have some money. If April spends...
19 min
Word problem: Amy has a pencil collection. ³/₅ of them...
19 min
Word problem: A wooden chess set cost $80 more...
24 min
Worksheet PDF
Answer PDF
Lesson 9
This lesson is not available for trial.
45 min
Extra / Short of
14 min
Let’s Try! Extra / Short of I
17 min
Let’s Try! Extra / Short of II
14 min
Worksheet PDF
Answer PDF
Lesson 10
This lesson is not available for trial.
1 h 28 min
Average
17 min
Word problem: The average of 16 items was found to be...
14 min
Rate
11 min
Rate (Man-hour & Man-day)
10 min
Combined Rate
21 min
Real-life Application Question
15 min
Worksheet PDF
Answer PDF