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
71 − 10 = ______
51 − 10 = ______
58 − 10 = ______
89 + 20 = ______
1 × 10 = ______
87 + 20 = ______
26 + 10 = ______
2 × 10 = ______
6 × 10 = ______
60 + 10 = ______
7 × 10 = ______
3 × 10 = ______
23 + 20 = ______
5 × 10 = ______
75 + 10 = ______
87 − 10 = ______
14 + 10 = ______
50 + 20 = ______
54 + 20 = ______
87 + 10 = ______
