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
20 + 20 = ______
73 + 10 = ______
79 − 10 = ______
44 + 10 = ______
37 − 10 = ______
48 + 20 = ______
3 × 10 = ______
5 × 10 = ______
63 + 20 = ______
66 + 20 = ______
44 + 20 = ______
50 − 10 = ______
54 − 10 = ______
9 × 10 = ______
8 × 10 = ______
88 + 10 = ______
57 + 10 = ______
7 × 10 = ______
2 × 10 = ______
79 + 20 = ______
