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
31 − 10 = ______
41 + 20 = ______
26 − 10 = ______
32 + 10 = ______
4 × 10 = ______
56 − 10 = ______
43 + 10 = ______
71 − 10 = ______
57 + 20 = ______
9 × 10 = ______
77 + 20 = ______
2 × 10 = ______
5 × 10 = ______
85 + 20 = ______
16 + 20 = ______
64 + 20 = ______
53 − 10 = ______
28 − 10 = ______
73 − 10 = ______
19 + 10 = ______
