# Start or used?


## 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.

## Day

57

## Id

H07

## Notice

Ordinary optional home practice, not unseen assessment or proof a child actually handled stock. Suggested 5–12 minutes, unpiloted; stop after a useful part.

## Numbered moves


1. Read the stated source and choose paper, description or usual communication. Contrast□−4=9 and 13−□=9 first.

2. Try one own way before the grown-up model. Keep your values and unit labels.

3. Grown-up separate practice possibility: Join 26 used and 47 left to get 73 start; check 73−26=47; label start/used/left.

4. Receive one available explanation or check. Ask whether to keep, change, pause or finish; another example is optional.

## Purpose

Help a new maker read the missing role.

## Routes


1. 
### Instruction

Contrast□−4=9 and 13−□=9 first.

### Name

A small beginning


2. 
### Instruction

Help a new maker read the missing role. Use complete provided source and label the answer unit.

### Name

Make the useful note


3. 
### Instruction

Choose a different whole count within 0–200 that keeps the result nonnegative. Restate all conditions and check the new result; the original worked answer cannot fill it.

### Name

Change one condition


## Complete source

An invented label box starts with an unknown count of labels. It uses26 labels and has47 left: □−26=47. Find the start and check it.

## Title

Start or used?