# Ten ones can travel together


## Child direction

Make a plan for a collection that crosses a ten or a hundred. Pick one route. Show what the numbers mean, try a way, then check one result. You can stop after a useful part.

## Purpose

Regroup an addition without changing its value.

## Complete fictional source

An invented costume cupboard has 364 tags, then receives 278 tags of the same kind. Find the new count.

## One own invitation

Try 258 + 167. Show the regroup or describe it exactly.

## Access

Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.

## Routes


1. 
### Id

A

### Title

Game counters

### Complete task

There are 28 fictional counters and 17 more. Show what happens to fifteen ones.

### Entry or access

Build one ten from ten labelled ones if needed.

### Access

Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.


2. 
### Id

B

### Title

Picture station

### Complete task

Use 527 and 186 cards. Make a checkable regrouping note.

### Entry or access

Keep each place-value amount visible.

### Access

Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.


3. 
### Id

C

### Title

Print store

### Complete task

Join 2687 and 1756 imagined sheets. Compare adding chunks with place-value regrouping.

### Entry or access

Use this only after thousands can be renamed.

### Access

Show, draw, type, sign, use your usual communication or direct an agreeing helper. Choose quiet/private work, switch a route, pause, pass or finish. One useful part is enough. A helper can read the exact words or scribe your choices; supplying an operation, count, regrouping or reason is mathematical help and is named. No speed, neatness, speech, handling or device requirement.