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
7 × 10 = ______
98 − 10 = ______
9 × 10 = ______
96 − 10 = ______
54 + 20 = ______
73 − 10 = ______
23 + 20 = ______
55 − 10 = ______
89 + 20 = ______
64 − 10 = ______
30 + 10 = ______
53 − 10 = ______
77 + 10 = ______
85 + 10 = ______
3 × 10 = ______
2 × 10 = ______
99 − 10 = ______
37 − 10 = ______
89 + 10 = ______
26 + 20 = ______
