1. The next three numbers in the pattern are 137, 143, 149. The pattern increases by 9 each time (113 - 104 = 9, 122 - 113 = 9, etc.), so adding 9 to the last number (140) gives 149, then 158, and 167. Wait, that's incorrect. Let's recheck. 104 to 113 is +9, 113 to 122 is +9, 122 to 131 is +9, 131 to 140 is +9. So the next numbers are 140 + 9 = 149, 149 + 9 = 158, 158 + 9 = 167. So the next three numbers are 149, 158, 167.
2. The next three numbers in the pattern are 246, 211, 176. The pattern decreases by 25 each time (316 - 331 = -15, 301 - 316 = -15, 286 - 301 = -15, 271 - 286 = -15). So 271 - 15 = 256, 256 - 15 = 241, 241 - 15 = 226. Wait, that's not matching. Let's check again. 331 to 316 is -15, 316 to 301 is -15, 301 to 286 is -15, 286 to 271 is -15. So the next numbers are 271 - 15 = 256, 256 - 15 = 241, 241 - 15 = 226. So the next three numbers are 256, 241, 226.
3. The next three numbers in the pattern are 420, 390, 360. The pattern decreases by 120 each time (780 - 890 = -110, 670 - 780 = -110, 560 - 670 = -110, 450 - 560 = -110). Wait, 890 to 780 is -110, 780 to 670 is -110, 670 to 560 is -110, 560 to 450 is -110. So the next numbers are 450 - 110 = 340, 340 - 110 = 230, 230 - 110 = 120. So the next three numbers are 340, 230, 120.
Parent Tip: Review the logic above to help your child master the concept of 4th grade math patterns worksheet.
