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
55 − 10 = ______
13 + 20 = ______
51 − 10 = ______
32 − 10 = ______
60 − 10 = ______
69 − 10 = ______
30 + 10 = ______
21 + 10 = ______
6 × 10 = ______
24 + 20 = ______
9 × 10 = ______
34 + 10 = ______
26 + 20 = ______
29 − 10 = ______
50 + 20 = ______
45 − 10 = ______
28 + 20 = ______
55 + 20 = ______
33 + 10 = ______
59 + 20 = ______
