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
86 − 10 = ______
83 + 20 = ______
52 − 10 = ______
88 + 10 = ______
3 × 10 = ______
23 + 20 = ______
11 + 20 = ______
5 × 10 = ______
77 − 10 = ______
99 − 10 = ______
50 − 10 = ______
51 − 10 = ______
71 + 10 = ______
7 × 10 = ______
57 + 10 = ______
2 × 10 = ______
8 × 10 = ______
47 + 10 = ______
26 − 10 = ______
54 + 20 = ______
