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
26 + 20 = ______
89 + 20 = ______
9 × 10 = ______
6 × 10 = ______
49 + 10 = ______
85 − 10 = ______
2 × 10 = ______
74 + 20 = ______
31 + 20 = ______
41 + 10 = ______
5 × 10 = ______
42 + 20 = ______
76 + 20 = ______
37 + 20 = ______
86 + 20 = ______
36 − 10 = ______
58 − 10 = ______
62 − 10 = ______
93 − 10 = ______
1 × 10 = ______
