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
20 + 10 = ______
80 + 20 = ______
89 − 10 = ______
47 − 10 = ______
48 + 10 = ______
54 − 10 = ______
62 + 10 = ______
49 + 10 = ______
50 + 10 = ______
35 + 10 = ______
40 + 10 = ______
26 + 20 = ______
61 − 10 = ______
93 − 10 = ______
83 + 10 = ______
1 × 10 = ______
2 × 10 = ______
4 × 10 = ______
51 − 10 = ______
64 + 20 = ______
