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
56 + 20 = ______
49 − 10 = ______
66 − 10 = ______
57 + 20 = ______
22 + 20 = ______
63 + 10 = ______
27 − 10 = ______
81 + 10 = ______
32 + 10 = ______
72 − 10 = ______
9 × 10 = ______
69 + 20 = ______
1 × 10 = ______
26 − 10 = ______
53 − 10 = ______
6 × 10 = ______
3 × 10 = ______
28 − 10 = ______
35 + 20 = ______
86 − 10 = ______
