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 + 10 = ______
78 + 10 = ______
1 × 10 = ______
55 + 20 = ______
73 + 20 = ______
33 + 10 = ______
86 + 20 = ______
8 × 10 = ______
36 − 10 = ______
59 − 10 = ______
7 × 10 = ______
56 + 10 = ______
3 × 10 = ______
67 + 20 = ______
75 − 10 = ______
38 − 10 = ______
96 − 10 = ______
21 + 10 = ______
74 − 10 = ______
39 + 10 = ______
