Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
87 + 20 = ______
91 − 10 = ______
80 + 20 = ______
8 × 10 = ______
51 + 20 = ______
67 + 10 = ______
80 − 10 = ______
49 − 10 = ______
84 − 10 = ______
15 + 10 = ______
7 × 10 = ______
51 − 10 = ______
72 + 10 = ______
66 + 20 = ______
44 − 10 = ______
23 + 20 = ______
61 + 10 = ______
90 − 10 = ______
1 × 10 = ______
73 − 10 = ______
