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
73 + 10 = ______
72 + 20 = ______
12 + 10 = ______
2 × 10 = ______
87 + 20 = ______
89 + 20 = ______
37 + 20 = ______
85 + 20 = ______
8 × 10 = ______
86 − 10 = ______
3 × 10 = ______
27 − 10 = ______
25 + 20 = ______
4 × 10 = ______
21 + 10 = ______
78 − 10 = ______
23 − 10 = ______
62 + 10 = ______
7 × 10 = ______
75 + 10 = ______
