Choose the place, keep the original
Round whole numbers to any place, including exact and halfway cases.
Explore this lesson →12 practice questions · Optional read aloud · Thinking pad
Let’s understand the idea.
- A requested place tells you the size of the multiples to compare.
- An exact multiple stays unchanged. Rounding a whole number to the nearest one also leaves it unchanged.
- At the midpoint, use the greater multiple. Near one million, the answer can be one million.
- A positive count can round to zero at a broad scale; it does not mean the exact count was zero.
Something to notice
Ask for a prediction before revealing the model, then ask the learner to connect the result to the chosen place. Include zero, an exact multiple and a halfway case. A matching result and reason are practice; a new spoken explanation helps show whether the place meaning is understood.
Try it. Change it. Explain it.
Open the lesson to use its pictures and controls. In How it works, connect the picture to the idea. In Play & discover, change the quantities and notice what stays the same. In Your turn, answer questions and use the explanation to check your reasoning.
You can ask for help, draw on the thinking pad, or listen to the question and answer options. Progress distinguishes independent work from work completed with help.
Let’s try it →Curriculum connection
Grade 4 · 4.NBT · US Common Core
This lesson is mapped to these standards. A completed activity is practice evidence, not a claim of mastery. Content is checked against the linked official standards and its mathematical models are tested.