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
55 + 10 = ______
1 × 10 = ______
37 − 10 = ______
57 − 10 = ______
99 − 10 = ______
88 + 20 = ______
31 − 10 = ______
63 − 10 = ______
9 × 10 = ______
54 + 20 = ______
59 + 20 = ______
3 × 10 = ______
64 − 10 = ______
72 + 10 = ______
73 − 10 = ______
85 − 10 = ______
32 + 10 = ______
5 × 10 = ______
12 + 20 = ______
72 + 20 = ______
