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
49 − 10 = ______
89 + 20 = ______
43 − 10 = ______
16 + 20 = ______
63 + 20 = ______
64 + 10 = ______
55 + 10 = ______
81 − 10 = ______
78 − 10 = ______
8 × 10 = ______
86 + 10 = ______
84 − 10 = ______
30 − 10 = ______
85 + 10 = ______
52 + 10 = ______
48 − 10 = ______
1 × 10 = ______
34 + 10 = ______
94 − 10 = ______
76 + 10 = ______
