# Borrow a friendly number, then put it back


## Child direction

Would moving to a nearby round number make this job easier? Pick one route. Show what the numbers mean, try a way, then check one result. You can stop after a useful part.

## Purpose

Use exact compensation and distinguish it from estimation.

## Complete fictional source

An invented sticker design has 398 blue stickers and 267 plain stickers. Find the exact total.

## One own invitation

Work 299 + 146 exactly using a friendly number, and name the adjustment.

## 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

Puzzle pieces

### Complete task

An invented puzzle tray joins 49 and 27 pieces. Use fifty carefully.

### Entry or access

Draw the one added extra separately.

### 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

Sticker plan

### Complete task

Find 398 + 267 and compare compensation with chunks.

### Entry or access

Explain which quantity was changed.

### 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

Museum-copy game

### Complete task

An imaginary exhibit game counts 1998 + 367 slips. Compare exact compensation and a nearest-hundred estimate.

### Entry or access

This fictional game is not a museum programme or attendance fact.

### 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.