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 + 10 = ______
39 + 10 = ______
68 − 10 = ______
75 + 10 = ______
2 × 10 = ______
26 − 10 = ______
57 + 20 = ______
56 − 10 = ______
99 − 10 = ______
3 × 10 = ______
81 − 10 = ______
1 × 10 = ______
6 × 10 = ______
78 − 10 = ______
74 + 20 = ______
37 + 20 = ______
66 − 10 = ______
50 + 10 = ______
19 + 20 = ______
44 + 20 = ______
