Section 2: Comparing Numbers
Compare the following numbers using >, <, or =:
a) 2,567,890 < 2,567,891
b) 999,999 < 1,000,000
c) 3,456,789 > 3,456,788
d) 89,001,234 < 89,123,401
Section 3: Rounding
Round the following numbers to the nearest thousand:
a) 5,674,829 – 5,675,000
b) 34,567,981 – 34,568,000
c) 192,346,707 – 192,347,000
d) 7,812,345 – 7,812,000
Round the following numbers to the nearest ten thousand:
a) 98,345,672 – 98,350,000
b) 3,678,123 – 3,680,000
c) 456,789,013 – 456,790,000
d) 567,890,987 – 567,890,000
Section 4: Addition and Subtraction
Perform the following additions:
a) 567,890 + 123,456 = 691,346
b) 1,234,567 + 2,345,678 = 3,580,245
c) 45,678,901 + 9,876,543 = 55,555,444
d) 23,456,789 + 34,567,890 = 58,024,679
Perform the following subtractions:
a) 567,890 – 123,456 = 444,434
b) 2,345,678 – 1,234,567 = 1,111,111
c) 9,876,543 – 45,678,901 = -35,802,358 (Negative result means the second number is greater)
d) 34,567,890 – 23,456,789 = 11,111,101
   Challenge: Add or subtract the following numbers:
a) 456,789,012 + 123,456,789 – 234,567,890 = 345,677,911
b) 987,654,321 – 123,456,789 + 345,678,901 = 1,209,876,433
Section 5: Word Problems
The population of City A is 5,678,345, and the population of City B is 4,567,890. Calculate the total population of both cities:
Total population = 5,678,345 + 4,567,890 = 10,246,235
A company sold 2,345,678 smartphones in January and 1,234,567 smartphones in February. How many smartphones were sold in total?
   Total smartphones sold = 2,345,678 + 1,234,567 = 3,580,245
There are 789,123 students in a school district. Out of them, 234,567 use school buses for transportation. How many students don’t use school buses?
   Students not using school buses = 789,123 – 234,567 = 554,556
