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 + 20 = ______
57 + 10 = ______
67 + 20 = ______
88 − 10 = ______
92 − 10 = ______
31 + 20 = ______
17 + 10 = ______
36 + 20 = ______
39 − 10 = ______
3 × 10 = ______
1 × 10 = ______
14 + 10 = ______
54 + 10 = ______
54 − 10 = ______
58 + 20 = ______
72 + 20 = ______
9 × 10 = ______
4 × 10 = ______
26 − 10 = ______
85 − 10 = ______
