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
6 × 10 = ______
33 − 10 = ______
61 + 20 = ______
74 + 10 = ______
7 × 10 = ______
91 − 10 = ______
55 − 10 = ______
78 − 10 = ______
86 − 10 = ______
44 − 10 = ______
31 + 10 = ______
50 + 10 = ______
38 + 20 = ______
34 − 10 = ______
51 + 10 = ______
30 + 10 = ______
75 + 20 = ______
77 + 20 = ______
74 − 10 = ______
85 + 20 = ______
