Interactive practice questions
Using the fact family of $4$4, $4$4, and $8$8.
 |
$+$+ |  |
$=$= |  |
| $4$4 | $+$+ | $4$4 | $=$= | $8$8 |
What is $8-4$8−4?
Easy
< 1min
Using the fact family of $6$6, $6$6, and $12$12:
Easy
< 1min
Using the fact family of $8$8, $7$7, and $15$15.
Easy
1min
Using the fact family of $9$9, $5$5, and $14$14:
Easy
1min
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