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
75 − 10 = ______
90 − 10 = ______
85 − 10 = ______
9 × 10 = ______
4 × 10 = ______
59 − 10 = ______
68 + 20 = ______
93 − 10 = ______
73 − 10 = ______
39 + 20 = ______
17 + 10 = ______
49 − 10 = ______
27 + 20 = ______
3 × 10 = ______
32 + 20 = ______
2 × 10 = ______
79 + 10 = ______
47 + 10 = ______
1 × 10 = ______
42 − 10 = ______
