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
74 + 20 = ______
42 + 20 = ______
20 + 20 = ______
46 + 10 = ______
72 − 10 = ______
84 + 20 = ______
41 + 20 = ______
57 − 10 = ______
99 − 10 = ______
56 + 20 = ______
76 − 10 = ______
14 + 10 = ______
62 − 10 = ______
86 − 10 = ______
11 + 10 = ______
4 × 10 = ______
2 × 10 = ______
41 + 10 = ______
45 + 20 = ______
6 × 10 = ______
