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
3 × 10 = ______
60 + 20 = ______
67 + 10 = ______
24 + 20 = ______
46 − 10 = ______
5 × 10 = ______
8 × 10 = ______
78 − 10 = ______
78 + 20 = ______
9 × 10 = ______
57 − 10 = ______
80 − 10 = ______
39 + 10 = ______
66 + 20 = ______
81 − 10 = ______
98 − 10 = ______
62 − 10 = ______
34 + 10 = ______
46 + 20 = ______
12 + 20 = ______
