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
78 + 10 = ______
17 + 10 = ______
50 + 10 = ______
88 + 10 = ______
5 × 10 = ______
90 − 10 = ______
26 + 20 = ______
3 × 10 = ______
6 × 10 = ______
59 − 10 = ______
8 × 10 = ______
9 × 10 = ______
50 + 20 = ______
7 × 10 = ______
26 − 10 = ______
48 − 10 = ______
21 + 10 = ______
29 + 20 = ______
55 − 10 = ______
64 + 20 = ______
