Order Numbers to 20

Order Numbers to 20 practice with teacher guidance, common slips, and next-step routes.

Core · Order Numbers to 20 · Independent practice · Sequence Order

Problem number / 3

Put the five number cards 13, 7, 10, 17, and 9 into a sorting strip with five spaces. The arrow points from left to right, and the numbers must get larger in that direction. Use each card exactly once. What is the complete order from left to right?

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Print: Ages 6–7 · 1–2 min · Foundation · Ordering numbers to 20 · Number ordering · Order number cards

Watch: Watch whether the child checks each neighboring pair and uses every card once; a complete row of 7, 9, 10, 13, 17 is decisive evidence.

Misread: A reversed row suggests the arrow was read backward; 7, 10, 9, 13, 17 shows a local comparison slip, while a missing or repeated card shows the complete-order rule was missed.

Curriculum: The task practises comparing and ordering whole numbers to 20 by numerical magnitude. The scored skill is constructing one complete increasing sequence from the given set, not counting cards or following their starting order.