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
66 − 10 = ______
79 + 10 = ______
60 + 20 = ______
49 − 10 = ______
14 + 20 = ______
26 + 20 = ______
9 × 10 = ______
52 − 10 = ______
31 + 10 = ______
35 + 10 = ______
4 × 10 = ______
6 × 10 = ______
92 − 10 = ______
52 + 10 = ______
70 + 10 = ______
49 + 10 = ______
62 − 10 = ______
71 + 20 = ______
83 + 10 = ______
34 − 10 = ______
