Ruby
1. 400, 450
2. 8,000, 9,000
3. 318, 321
4. 917, 936
5. 720, 760
6. 250, 270
Pearl
1. 95,689, 94,689
2. 2,974, 2,954
3. 802, 702
4. 6,989, 7,089
5. 10,678, 12,678
6. 109,078, 119,078
Diamond
1. Yes, because adding or subtracting 1,000 from any number ending in three zeros will always result in another number ending in three zeros.
2. No, because the difference between 15,678 and 11,678 is 4,000, which means they are not consecutive terms in a sequence counting by 1,000. The sequence would be 11,678, 12,678, 13,678, 14,678, 15,678.
3. Sam is incorrect. Counting in steps of 1,000 means adding 1,000 each time. The sequence should be 1,456, 2,456, 3,456, 4,456, etc., not 1,456, 1,556, 1,656, etc.
Parent Tip: Review the logic above to help your child master the concept of sequences worksheet year 5.
