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
43 − 10 = ______
26 + 20 = ______
50 − 10 = ______
31 − 10 = ______
15 + 20 = ______
3 × 10 = ______
4 × 10 = ______
29 − 10 = ______
41 + 10 = ______
83 + 10 = ______
55 + 20 = ______
47 + 20 = ______
83 + 20 = ______
57 + 10 = ______
9 × 10 = ______
40 − 10 = ______
5 × 10 = ______
60 + 10 = ______
51 + 20 = ______
46 + 20 = ______
