Test your child's strength in double-digit subtraction and addition with this ninja worksheet. Challenge his abilities with these tricky word problems!

Hurry! If these numbers aren't added quickly using regrouping, they'll pop!

Try solving near-doubles facts with these nine problems!

Practice adding doubles with this colorful worksheet!

Practice solving near-doubles facts with this engaging worksheet!

Discover combinations that make 10 with this engaging cut-and-paste worksheet, designed for first and second graders!

Help first and second graders practice solving near-doubles facts using this fun worksheet!

Solve near-doubles facts with this appealing worksheet!

Use this visual model to practice adding 10 to two-digit numbers!

Practice identifying doubles facts with this appealing worksheet!

Solve an enjoyable maze of doubles facts with this fun one-page worksheet!