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
61 + 20 = ______
2 × 10 = ______
37 + 20 = ______
74 + 20 = ______
38 + 10 = ______
44 − 10 = ______
65 + 20 = ______
86 − 10 = ______
15 + 10 = ______
98 − 10 = ______
5 × 10 = ______
26 + 10 = ______
77 + 20 = ______
76 + 10 = ______
1 × 10 = ______
37 + 10 = ______
6 × 10 = ______
68 − 10 = ______
99 − 10 = ______
22 − 10 = ______
