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
4 × 10 = ______
54 + 10 = ______
8 × 10 = ______
62 + 20 = ______
3 × 10 = ______
27 + 20 = ______
68 + 20 = ______
52 + 10 = ______
21 + 10 = ______
56 − 10 = ______
76 − 10 = ______
39 + 10 = ______
49 + 20 = ______
62 + 10 = ______
50 − 10 = ______
74 − 10 = ______
86 − 10 = ______
75 + 10 = ______
74 + 20 = ______
37 + 10 = ______
