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Frog Mystery Picture: Adding & subtracting to 100

Solve 135 problems (Adding & subtracting to 100, numbers 1–100) and color the matching squares to reveal the Frog. The worksheet and answer key download together.

equations
135
Largest number
100
Size
M

A cheerful green frog with bulging eyes, a wide smile and a light green belly. The two eyes on top of the head make it easy to recognize once they are colored.

Problems use two-digit numbers up to 100, mixing those with and without regrouping: 36 + 27, 45 + 30, 82 − 49, 70 − 26. Children practice adding tens and ones separately, trading ten ones for a ten, and subtracting when the ones digit on top is too small, as in 82 − 49. Mental strategies such as adding 30 and then 6 work well here, and so do column methods on scrap paper.

Two-Digit Addition and Subtraction Color by NumberFrog Math Mystery Picture Worksheet

What to practice