Function Machines
A machine that adds 3 or takes 2: complete its in/out table, find its rule, run it backwards, or fill a double-entry table.
Numbers go into the machine and come out changed. The child completes the in/out table under a machine labelled +3, −2 or ×5; finds the rule of a machine whose table is already full; works backwards from the numbers that came out to the ones that went in; or fills in a double-entry addition or times table, where each cell is its row number and its column number put together. Adding, taking away, a mix of both, or multiplying, within 10, 20 or 100.
- Age
- ages 5–9
- Answer key
- Included, free
- Skills
- arithmeticlogic
What you can change
Task
What comes out?, Find the rule, What went in?, Double-entry table
The machine
Adds, Takes away, Both, Multiplies
Numbers within
10, 20, 100
How many machines
1–4
Numbers in each table
3–6
- Every page also takes the book's language, page size, theme and pictures.
Ready-made worksheets with this page
Used in 1 worksheet set for the school year, in its country's language.
➕ Adding and taking away
All activities →Picture sums, number bonds, missing numbers and sum sheets.
Put it in a book with other pages: covers, answer keys and a certificate are free.
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